Escaping the Middle-Income Trap in Sub-Saharan Africa: Institutions, Firm Dynamics, and Spatial Development in Kenya's Stalled Transition

This paper examines why Kenya, one of Sub-Saharan Africa's longer-standing lower-middle-income economies, has struggled to progress beyond an investment-led growth model toward the technology-infusion and innovation stages described in the World Bank's World Development Report 2024 (Behuria & Sumner, 2025). Drawing together Daron Acemoglu and James Robinson's institutional theory of comparative development, Ufuk Akcigit's work on firm dynamics and misallocation in developing economies, and Somik Lall's research on African urbanization, the paper develops an integrated framework linking political institutions, firm-level productivity dynamics, and spatial organization to the persistence of the middle-income trap. It argues that Kenya's difficulty in completing the transition from a one-lever ("1i") investment strategy to a two-lever ("2i") investment-and-infusion strategy, and its still more distant prospects for a three-lever ("3i") innovation-augmented strategy, should be understood not primarily as a failure of policy design but as a downstream consequence of political-economic arrangements whose extractive features were established during the colonial period and have been substantially, if unevenly, reproduced since independence. These arrangements manifest concretely in a "missing middle" of firms unable to scale past small size (Deconstructing the Missing Middle: Informality and Growth of Firms in Sub-Saharan Africa, n.d.), weak competitive selection that shields politically connected incumbents (Systematic Country Diagnostic, n.d.), and cities that remain comparatively closed to regional and global trade. The paper concludes with policy implications for the sequencing of institutional reform in Kenya and comparable Sub-Saharan African economies, and it identifies avenues for further comparative and firm-level empirical research.

middle-income trap; institutions; Sub-Saharan Africa; Kenya; firm dynamics; urbanization; economic development.

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