Market Concentration, Contestability, and Sunk Costs
基于多样本行业评估可竞争性理论，发现沉没成本是市场集中度的重要决定因素，即使控制技术因素后仍解释大量样本方差。
This paper provides an exploratory assessment of the theory of contestability that is based on a diverse sample of industries and introduces a new important determinant of market concentration. The results of the paper indicate that the variables determining the degree of contestability of markets are significant correlates of market concentration. Sunk costs account for a substantial portion of the sample variance of concentration even after technological factors are controlled for. Copyright 1990 by MIT Press.