An empirical model of firm entry with endogenous product-type choices
构建了一个产品类型选择内生的企业进入模型，用视频零售业数据估计，发现产品差异化能显著提高利润，并通过模拟展示了需求与竞争加剧之间的权衡。
I describe a model of entry with endogenous product-type choices. These choices are formalized as the outcomes of a game of incomplete information in which rivals' differentiated products have nonuniform competitive effects on profits. I estimate the model for location choices in the video retail industry using a nested fixed-point algorithm solution. The results imply significant returns to product differentiation. Simulations illustrate the tradeoff between demand and intensified competition and the extent to which markets with more scope for differentiation support greater entry.