Independent Researcher, Nairobi, Kenya

teresiadigital@gmail.com

September 2026

Abstract

A recurring puzzle in small business research is that firms with satisfied customers, a functioning product, and competent staff often fail to grow. This paper argues that the puzzle arises from conflating two distinct properties of a firm: business quality, or the capacity to create value for some customers, and growth capacity, or the capacity to create, communicate, deliver, and capture that value repeatedly at a larger scale while remaining financially and operationally viable. Drawing on evidence from World Bank enterprise survey research, the McKinsey Global Institute, Bain & Company, and Harvard Business School scholarship on scaling, the paper develops an integrative framework in which sustainable growth is bounded by the weakest of several interacting factors: demand depth, perceived value, unit economics, cash availability, operational capacity, organizational capability, and adaptive capacity. The paper reviews evidence on product-market fit, founder dependence, pricing, informality, and institutional constraints, with particular attention to the Kenyan micro, small, and medium enterprise (MSME) context. It concludes by proposing a five-phase empirical research design to identify the binding constraint in individual firms and by reframing the guiding question of small business growth research from “why are customers not coming?” to “where, precisely, does value stop flowing through the business system?”

Keywords

business growth; small and medium enterprises; scaling; unit economics; founder dependence; informality; MSME finance; Kenya

1. Introduction

A business can have satisfied customers, a useful product, and competent staff, and still fail to grow. This observation is common enough in practice that it deserves a more precise theoretical treatment than it typically receives. The conventional explanation for stagnation is insufficient marketing or customer acquisition. This paper argues that this explanation is frequently incomplete and that it obscures a more fundamental distinction between business quality and growth capacity.

Business quality refers to a firm’s demonstrated capacity to create value for some group of customers. Growth capacity refers to a firm’s capacity to create, communicate, deliver, and capture that value repeatedly, at a larger scale, while remaining financially and operationally viable. These are not the same property, and a firm can score highly on the first while scoring poorly on the second. The central claim advanced here is that growth is a joint function of at least four interacting variables: demand, economics, capacity, and adaptation. Weakness in any one of these can produce stagnation regardless of strength in the others, so that additional marketing activity directed at a non-marketing constraint tends to produce operational strain rather than sustainable growth.

The remainder of the paper proceeds as follows. Section 2 sets out the conceptual distinction between business quality and growth capacity in more detail. Section 3 reviews the relevant literature under ten thematic headings, drawing on evidence from international development institutions and management scholarship. Section 4 synthesises this material into a systems model of constrained growth. Section 5 sets out competing explanations for stagnation that a rigorous study must be able to distinguish between. Section 6 proposes a sharper research question and a set of testable research questions. Section 7 outlines a feasible empirical research design. Section 8 presents the paper’s central theoretical contribution, a minimum-constraint model of sustainable growth. Sections 9 and 10 discuss limitations and conclude.

2. Conceptual Framework: Business Quality versus Growth Capacity

The framework proposed here treats growth as the outcome of an interaction rather than a sum. Formally, growth capacity can be represented as a function of demand, economics, capacity, and adaptation, such that a severe weakness in any one factor constrains the outcome regardless of strength in the remaining factors. This has an important practical implication: if any one of these four elements is weak, an increase in marketing expenditure or customer acquisition effort is likely to produce more operational pressure rather than more sustainable growth.

This framing reorients the research question. Rather than asking why customers are not coming, the more productive question is what constraint prevents the business from converting demonstrated customer value into repeatable, profitable, and manageable growth. Ten candidate constraints are examined in the literature review that follows: product-market fit and scalability, cash flow, unit economics, founder dependence, organizational complexity, operational capacity, market depth, pricing, informality, and institutional environment.

3. Literature Review

3.1 Product-Market Fit Is Necessary but Not Sufficient

A firm may exhibit clear evidence of demand without possessing a scalable operating model. Customers may buy because the founder personally explains the product, because the service is highly customised, because the founder personally supervises delivery, or because customers tolerate delays out of personal trust in the owner. In each case, demand is real but is bound to a non-repeatable input, typically the founder’s direct involvement.

Industry analysis of startup scaling reinforces this distinction between growth and scaling: a McKinsey study cited in recent scaling literature found that a substantial majority of companies that successfully achieve product-market fit still fail to scale afterward, commonly because they never institutionalise the tools, systems, and teams required to sustain performance at a larger volume (Workday, n.d.). Venture-capital practitioner literature similarly distinguishes scaling, in which revenue grows faster than the cost of serving it, from mere growth, in which revenue and cost expand at a similar pace, and identifies durable demand, resilient unit economics, and repeatable processes as the three preconditions for a firm to be considered genuinely ready to scale (CRV, n.d.).

This creates a recognizable transition problem: the capabilities that generate early success are frequently not the capabilities required for the next stage of growth. A founder-led business may excel at acquiring its first hundred customers while being unable to serve its thousandth without a loss of quality, margin, or speed.

3.2 Growth as a Cash-Flow Problem

Revenue growth is not automatically self-financing. Expansion typically requires additional spending on inventory, staff, equipment, premises, delivery capacity, technology, customer credit, regulatory compliance, and marketing, much of which is incurred before the associated revenue is collected. Where cash leaves the business before customers pay, growth can widen rather than close the firm’s financing gap.

This constraint is especially salient for smaller enterprises. The IFC and World Bank’s most recent joint assessment of the MSME finance gap estimates that, across 119 emerging markets and developing economies, unmet demand for MSME credit totals approximately US$5.7 trillion, equivalent to about 19 percent of GDP in those economies, with 40 percent of formal MSMEs reporting that they are credit-constrained (International Finance Corporation & World Bank, 2025). An earlier World Bank policy volume on MSME finance similarly concludes that limited access to finance constrains the growth and competitiveness of micro, small, and medium enterprises, in part because high real or perceived transaction costs and risk discourage commercial lenders from serving this segment (Malhotra et al., 2007).

The relevant analytical distinction is between accounting profit and available cash. A business can be profitable on an accrual basis and still be unable to fund the working capital that expansion requires.

3.3 Unit Economics and the Fragility of “Good” Businesses

Customer satisfaction does not guarantee attractive unit economics. A firm can retain loyal customers while simultaneously carrying low gross margins, high fulfillment costs, expensive customer acquisition, elevated refund or rework rates, long payment cycles, heavy reliance on discounting, low repeat-purchase frequency, and high founder involvement in delivery.

Growth tends to amplify these weaknesses rather than resolve them. Where the contribution margin per additional customer, defined as revenue less variable delivery and acquisition costs, is small or negative, acquiring further customers increases revenue without strengthening the underlying economics and may instead increase financial strain.

3.4 Founder Dependence and the Ceiling on Organizational Leverage

In many small firms, the founder simultaneously performs the roles of salesperson, product manager, quality controller, recruiter, customer support lead, financial decision-maker, and relationship manager. This concentration of functions can sustain high service quality in the firm’s early stages but produces low organizational leverage, because the business’s capacity is bounded by the number of decisions one individual can make.

Practitioner analysis of leadership transitions in growing firms describes this as a mismatch between the leadership mode appropriate to the founding stage and the systems-and-delegation mode required once a firm has established market fit; when this mismatch persists, firms commonly attribute the resulting stall to talent, market conditions, or product weaknesses, when the more precise cause is that decision rights and knowledge remain informal and concentrated in one person (Waymaker OS, n.d.). Because customers in such firms are often buying access to the founder rather than a standardized product or system, delegation becomes difficult and the constraint affects capacity, consistency, response time, staff development, decision speed, business valuation, and founder well-being simultaneously.

3.5 The Paradox of Growth: Complexity as a Silent Constraint

Bain & Company’s research on the internal barriers to sustained profitable growth found that executives at companies whose growth had stalled attributed the majority of the causes to internal rather than external factors, most commonly revenue growing faster than talent, increasing distance from the front-line customer, slower and more complex decision-making, an inability to choose focus and direction, and difficulty mobilizing resources (Bain & Company, n.d.). Bain terms this the “paradox of growth”: growth creates complexity, and complexity is, in the firm’s own account, the silent killer of profitable growth. Related Bain research associated with the Founder’s Mentality concept finds that only a small minority of companies successfully combine growth with the benefits of scale, while most instead accumulate complexity that slows decision-making without a compensating gain in profitability (Zook & Allen, 2016).

Complexity typically appears as a proliferation of products, customer segments, exceptions, channels, and approval layers, together with inconsistent pricing, fragmented data, and uneven service standards. A firm experiencing this pattern can become busier without becoming stronger, which is why growth should be assessed through operational indicators such as revenue per employee, gross margin, delivery time, error rate, repeat purchase, cash conversion, founder involvement, customer concentration, and capacity utilisation, rather than through revenue or customer count alone.

3.6 Operational Capacity as a Prior Condition for Demand Generation

Marketing activity can expose operational weakness by increasing demand faster than a firm can fulfil it. Typical symptoms include delayed delivery, stockouts, declining service quality, slower customer support, staff burnout, rising complaints, unclear internal responsibilities, and increased rework. Where the operating system is already near capacity, the appropriate next step is commonly process redesign, hiring, supplier diversification, or product simplification rather than additional customer acquisition.

This concern is consistent with Gary Pisano’s research on corporate growth strategy at Harvard Business School, which argues that a firm’s growth strategy must jointly address how fast to grow, where to find new demand, and how to build the financial, human, and organisational capabilities that growth requires; firms that pursue growth targets without regard to bottleneck resources, operating systems, culture, and human capital frequently damage the attributes that made them successful in the first place (Pisano, 2024).

3.7 Market Depth versus Customer Satisfaction

A product can be genuinely valuable to its existing customers while still having limited growth potential if the addressable market is small, purchase frequency is low, demand is geographically concentrated, urgency is weak, willingness to pay is limited, the niche is not expanding, strong substitutes exist, or the product solves a problem that customers can tolerate rather than one they urgently need solved. This yields an important distinction between customer love and market depth: a firm can have excellent testimonials and high reported satisfaction while lacking sufficient demand density to support materially higher revenue. A useful, if imperfect, heuristic is that market opportunity is a function of the number of relevant customers, their purchase frequency, and the price they can affordably pay; this does not produce a precise forecast, but it forces a firm to separate enthusiasm from economic potential.

3.8 Pricing and the Problem of Value Capture

Many small firms underprice their offer because they conflate affordability with accessibility. Underpricing can produce low margins, excess demand from unprofitable customer segments, an inability to hire or to invest in quality, dependence on volume rather than margin, a perception of low value, and a customer base that does not match the product’s intended positioning. Pricing therefore functions as more than a revenue decision: it shapes customer behaviour, the quality of demand attracted, competitive positioning, and the resources available for delivery. A firm’s apparent acquisition problem may, on closer inspection, be a value-capture problem.

3.9 Informality and the Ceiling on Scale

In many emerging markets, remaining informal can reduce a firm’s immediate costs and administrative burden, but it also tends to restrict access to formal finance, larger corporate customers, procurement systems, export markets, insurance, formal partnerships, infrastructure, government support programmes, and reliable business records. The McKinsey Global Institute’s cross-country analysis of MSME productivity finds that micro, small, and medium enterprises account for roughly two-thirds of business employment in advanced economies and close to four-fifths in emerging economies, yet on average operate at only about half the productivity of large companies, a gap that widens further in emerging markets and is associated with informality and limited scale (McKinsey Global Institute, 2024).

Formalization itself carries costs, so the more precise empirical question is not whether a firm should formalize, but at what point remaining informal imposes greater growth costs on the firm than formalization would impose in compliance costs.

3.10 Institutional and Infrastructural Constraints: Evidence from Kenya

Some firms struggle to grow not because of internal weaknesses but because the surrounding institutional and infrastructural environment is unreliable or costly. Relevant constraints documented in the literature include costly or unreliable electricity, transport limitations, weak digital and physical infrastructure, high interest rates, unpredictable regulation, tax and licensing costs, informal-sector competition, crime, limited skilled labour, restricted access to land, and reduced consumer purchasing power.

In the Kenyan context specifically, a World Bank assessment of the country’s informal enterprise sector, known locally as “Jua Kali,” reports that the informal sector accounted for approximately 82.7 percent of employment as of 2014 and identifies access to finance, corruption, informal competition, and limited managerial capacity as central constraints on firm growth and formalization (World Bank, 2016). World Bank Enterprise Survey data collected across Kenyan firms similarly finds that a substantial share of formally registered firms, roughly a quarter in the surveyed sample, identify informal-sector competition as the single largest obstacle to their operations, a proportion markedly higher than in comparator countries, even as the same surveys show an increase since 2007 in the proportion of Kenyan firms able to access bank financing for investment and working capital (World Bank Group, 2016). A KIPPRA analysis of World Bank Enterprise Survey data on Kenyan manufacturing firms further finds that formal registration at start-up and manager experience significantly improve access to formal finance, while perceptions of corruption and informal competition significantly worsen it (Ng’ang’a, 2015).

These findings matter analytically because they indicate that firm-level outcomes should not be explained solely through internal managerial capability. A well-managed firm can still be constrained by costs and institutions that lie outside its control.

4. An Integrative Systems Model of Constrained Growth

The business system through which customer value must flow can be represented as a sequence: customer, problem, value, product, positioning, price, distribution, sales, delivery, retention, economics, capacity, and growth. A firm may be strong at one stage of this sequence and weak at another, and it is the weakest stage, not the average quality of the system, that determines the growth outcome. Table 1 summarizes eleven constraints identified in the literature reviewed above, together with their typical manifestation and the reason customer acquisition activity fails to resolve them.

Table 1

Constraint	Typical manifestation	Why customer acquisition does not resolve it
Market constraint	Customers like the product, but the addressable market is narrow.	Additional promotion cannot manufacture purchase frequency that does not exist.
Value constraint	Customers understand the offer but do not consider it urgent.	Awareness does not create urgency.
Pricing constraint	Sales occur, but margins remain thin.	Additional volume can increase losses rather than profit.
Cash constraint	Orders grow, but the firm cannot finance inventory, staff, or receivables.	Demand arrives before the cash required to fulfill it.
Capacity constraint	Delivery quality falls as order volume rises.	Acquisition increases the rate of operational failure.
Capability constraint	The founder makes most operating decisions.	Growth creates decision-making bottlenecks.
Process constraint	Work is inconsistent and difficult to standardize.	Scale increases errors and rework.
Talent constraint	The firm cannot attract or retain skilled staff.	Demand exceeds organizational capability.
Trust constraint	Customers hesitate because perceived risk is high.	Visibility does not remove perceived risk
Institutional constraint	Finance, infrastructure, or regulation is restrictive.	Internal effort cannot fully offset structural barriers.

5. Competing Explanations for Business Stagnation

5.1 The business is not actually as good as assumed

Positive feedback can be misleading. Customers may express satisfaction while purchasing infrequently, may value the founder rather than the product, or may tolerate weaknesses because alternatives are limited. “Good business” therefore requires an operational definition based on indicators such as retention, referral rate, willingness to pay, gross margin, complaint rate, repeat purchase, customer outcomes, and delivery reliability, rather than reputation alone.

5.2 The business has demand but lacks scale capability

Here the core offer functions, but growth exposes latent weaknesses in systems, talent, cash, and coordination. This corresponds to the transition problem discussed in Section 3.1 and Section 3.4.

5.3 The market environment is the binding constraint

A firm may be well managed and still operate in a low-demand, low-income, or institutionally constrained market, in which case infrastructure, informal competition, and financing conditions can prevent expansion regardless of managerial competence, consistent with the Kenyan evidence reviewed in Section 3.10.

5.4 The owner does not want maximum growth

Some owners deliberately choose stability, independence, flexibility, or manageable risk over expansion, because growth can reduce autonomy and increase stress and financial exposure. A rigorous study should therefore distinguish involuntary stagnation from deliberate lifestyle-business choices, survival-oriented stability, temporary contraction, profitable but capacity-constrained operation, and businesses with genuine, currently unrealised expansion potential.

6. Toward a Sharper Research Question

The question “why do good businesses struggle to grow” is a strong starting point but requires greater precision, since it risks assuming both that every stagnant business is good and that growth is always the desirable outcome. A more precise formulation is proposed here: under what conditions does a business with validated customer value fail to convert that value into sustainable, profitable, and repeatable growth? A complementary, transition-focused formulation asks which constraints become binding as a business moves from founder-led early success toward repeatable organisational growth.

7. Proposed Research Questions

The following research questions operationalise the framework developed in Sections 2 through 6.

RQ1: Is the constraint really marketing?

When business owners describe customer acquisition as their principal growth constraint, what proportion of these cases are, on closer examination, attributable instead to pricing, product design, trust, delivery capacity, cash flow, or operational capacity? This can be examined by comparing owners’ stated constraints against an independent audit of the customer journey and unit economics.

RQ2: What happens after product-market fit?

Why do businesses with demonstrated repeat custom fail to develop the organisational capabilities required for scale? This question can be examined through comparative study of founder dependence, hiring practices, process documentation, cash-flow management, decision rights, data use, and customer concentration across firms with similar early success but divergent later trajectories.

RQ3: Does customer satisfaction coexist with weak growth economics?

Can a business exhibit high customer satisfaction while its customer base is economically unattractive, in the sense of generating low contribution margin, high support burden, or low referral behaviour? This connects consumer behaviour research to business economics.

RQ4: Is stagnation a demand problem or a working-capital problem?

Do small businesses fail to grow because underlying demand is insufficient, or because growth requires more working capital than the firm can access? This is particularly relevant in the Kenyan context, where access to finance recurs as a reported constraint (International Finance Corporation & World Bank, 2025; Ng’ang’a, 2015).

RQ5: When does informality become a ceiling rather than a shield?

At what point does the cost of remaining informal, in terms of restricted finance, restricted market access, and an inability to hire formally, exceed the compliance costs of formalisation?

RQ6: Does founder identity help early growth but limit later growth?

Does a strong founder-led brand accelerate initial adoption while later constraining scale, by tying customer loyalty to the founder personally rather than to a repeatable product or organisational system?

RQ7: What frictions prevent an already-persuaded customer from completing a purchase?

Which frictions in payment, delivery, response time, information, scheduling, guarantees, returns, location, or trust signals prevent a customer who already values the product from completing a transaction? This offers an alternative to the default assumption that insufficient awareness is the principal barrier to growth.

RQ8: Which firms are constrained, and which are choosing not to grow?

How do owners trade off income, control, time, risk, status, family obligation, employee responsibility, and expansion ambition, and how can involuntary constraint be distinguished empirically from deliberate choice?

8. Proposed Research Design

A five-phase mixed-methods design is proposed to identify the binding constraint within individual firms and across comparable samples of firms.

Phase 1: Operationalising “good business”

Rather than relying on reputation, firms would be assessed against multiple indicators, including a minimum of two years of continuous operation, evidence of repeat customers, positive reported customer outcomes, a stable or positive gross margin, manageable complaint rates, and the owner’s stated willingness to grow. Revenue level alone would not be treated as a sufficient indicator of business quality, since revenue can increase while underlying viability declines.

Phase 2: Identifying the owner’s claimed constraint

Structured interviews would ask owners what they believe is preventing growth, what has already been attempted, what they believe would unlock growth, what additional demand would do to current operations, and what they fear about growing.

Phase 3: Testing the claimed constraint against firm-level data

Independent evidence would be collected on customer acquisition and conversion, retention, pricing and margins, cash flow, operational capacity, delivery time, staff productivity, founder involvement, and customer concentration, and compared systematically against the owner’s stated explanation.

Phase 4: Comparative case selection

Firms operating in the same industry, of similar age, location, and customer segment, but with divergent growth trajectories, would be compared to determine whether the divergence is attributable to pricing, process maturity, access to finance, management practice, technology adoption, formalisation status, market access, or founder dependence.

Phase 5: Locating the binding constraint

For each firm, the design applies a counterfactual test of the following form: if this specific constraint were removed, would the firm actually be able to grow? For example, if customer acquisition doubled, could the firm fulfil the resulting demand; if financing became available, would the underlying economics justify borrowing; if additional staff were hired, could the firm train and manage them; if prices were raised, would the target customer segment remain; and if the founder stepped back from daily operations, would service quality be sustained? This step is designed to prevent the research from cataloguing barriers without identifying which one is decisive for a given firm.

9. Theoretical Contribution: A Minimum-Constraint Model of Sustainable Growth

The literature reviewed in this paper supports a central theoretical claim: growth is not simply a reward for being a good business. A firm grows sustainably when it can simultaneously align a sufficiently large addressable market, a valuable offer, a workable price, a repeatable acquisition path, reliable delivery, positive unit economics, adequate working capital, organisational capability beyond the founder, and a supportive external environment. Weakness in any single one of these elements can become the binding constraint on the whole system.

This suggests representing sustainable growth as a minimum function across its constituent components, that is, sustainable growth is bounded by the minimum of demand, value, economics, cash, capacity, capability, and adaptation, rather than by their average or their sum. The minimum framing matters because it implies that growth is typically limited by the single weakest critical component of the business system rather than by its overall average quality. Under this model, the central diagnostic task facing both researchers and practitioners is not to ask how a business can market itself more effectively, but to ask where, specifically, value stops flowing through the system.

10. Limitations and Directions for Future Research

This paper is conceptual and synthetic rather than empirical; it draws on secondary evidence from international development institutions and management consultancies rather than on original firm-level data collection. The proposed research design in Section 8 has not yet been implemented and its feasibility, particularly the willingness of owners to disclose detailed financial data, would need to be tested in a pilot study. Much of the cited evidence on informality and institutional constraints is specific to Kenya and other emerging markets and may not generalise directly to advanced-economy small business contexts, where the balance between market, cash, capacity, and institutional constraints is likely to differ. Future empirical work should prioritise longitudinal, multi-firm samples that allow the binding constraint identified in Section 9’s counterfactual test to be validated against subsequent, observed growth or continued stagnation.

11. Conclusion

Good businesses frequently struggle to grow not because they lack customer value, but because growth requires the joint alignment of demand, economics, operational capacity, organisational capability, and a supportive external environment, any one of which can act as a binding constraint on the system as a whole. Reframing small business growth research around the question of where value stops flowing through the business system, rather than around the assumption that stagnation reflects a marketing deficit, offers a more precise and more researchable foundation for understanding why good businesses struggle to grow.

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