Public entry and private prices: New evidence from Indian pharmaceutical markets
研究印度私营药店在公共-私营药房进入后如何调整定价，发现对价格敏感的药物价格下降，而对抗癌药等质量敏感药物价格上升，且市场集中度放大这一影响。
How do private firms respond to the entry of a vertically differentiated public firm? Answering this question can help design policies to balance redistribution against private-sector investment. In this paper, we study the pricing strategies of private-sector pharmacies after the entry of public-private dispensaries which sell discounted generic drugs. Public firm attracts away the quality agnostic consumers. The response of the private sector then depends on the underlying preferences of the residual market, composed of quality conscious consumers. We find that for drugs where this residual consumer is price sensitive, retail and wholesale prices in private firms decline in response to a shrinking market. For anti-cancer drugs, however, where quality conscious consumers are less likely to engage in price-shopping behavior, the private retailers increase prices which translate upstream as well. We also find that ex ante concentration of private players amplifies this impact. We conclude with some policy implications.