In Simple Words
Think of a factory that receives brand new machines and management advice, but operates in an isolated village with only ten families who buy its goods. Giving the factory better machines does not increase sales, whereas building a road or securing a contract to supply a national retail chain instantly expands factory production.
Research question
Traditional economic development programs focus predominantly on supply-side inputs like microcredit, general business training, and worker skilling, which yield only modest improvements in firm growth because small businesses fundamentally lack accessible buyers.
Participants
Small and medium enterprises across 15 randomized evaluations and 4 quasi-experimental studies in low- and middle-income countries.
Study Design
Systematic review and meta-synthesis of experimental research comparing supply-side programs with market access interventions.
Results
Supply-side programs (microcredit, business training, consulting) generated modest firm expansion, whereas demand-side market access interventions significantly increased firm revenue, profits, product quality, and long-term employment.
Takeaway
Reallocate private sector development funding from standalone supply-side managerial training toward demand-side market access interventions that connect small firms directly to institutional and foreign buyers.