垄断竞争
经济
效率低下
生产力
市场支配力
微观经济学
福利
产品市场
竞赛(生物学)
资源配置
垄断
市场结构
多样性(政治)
产业组织
宏观经济学
市场经济
社会学
生物
激励
人类学
生态学
作者
Swati Dhingra,John Morrow
摘要
Empirical work has drawn attention to the high degree of productivity differences within industries and their role in resource allocation. This paper examines the allocational efficiency of such markets. Productivity differences introduce two new margins of potential inefficiency: selection of the right distribution of firms and allocation of the right quantities across firms. We show that these considerations affect welfare and policy analysis, and market power across firms leads to distortions in resource allocation. Demand-side elasticities determine how resources are misallocated and when increased competition from market expansion provides welfare gains.
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