The final part of the analysis points to more fundamental, and less explored, drivers of growth.

1. The Influence of Culture

Culture—defined as slow-moving beliefs, social norms, and preferences—may form a foundational layer influencing institutions and economic outcomes.

• Trust and Regulation: Countries with lower levels of social trust tend to have more stringent government regulations. This may reflect a two-way causality: low trust creates a demand for regulation to protect against opportunism, while heavy regulation reduces opportunities for cooperative interactions, thereby inhibiting the formation of trust.
• Patience and Capital Accumulation: Parental investment in their children’s patience can be modeled as an economic choice. Occupations that reward delayed gratification (like artisanship) incentivize parents to instill patience. This cultural trait becomes a major economic advantage when new opportunities for capital accumulation arise, potentially explaining the historical rise of a thrifty middle class.

2. A Micro-Development Perspective on Growth

Drawing on micro evidence, this perspective questions the validity of aggregate production functions and highlights the importance of resource misallocation.

• Inefficiencies: Developing economies are characterized by vast and persistent differences in the marginal returns to capital across firms and sectors, contrary to the assumptions of aggregate models. These differences stem from market failures in credit, insurance, and labor markets.
• Heterogeneity: Accounting for firm-level heterogeneity in productivity and access to capital is crucial for explaining cross-country income gaps. Aggregate productivity is held back not just by firms at the frontier but by a long tail of inefficient firms, often linked through supply chains. This perspective suggests a renewed focus on targeted industrial policies designed to overcome specific market failures and learning externalities at the sectoral level.