论文标题
使用信息扩大竞争
Using Information to Amplify Competition
论文作者
论文摘要
我表征了竞争市场中的消费者最佳市场细分，在这些市场中，多家公司向具有单位需求的消费者出售差异化产品。这种细分是公开的---每个公司都观察到相同的市场细分市场 - 并采用一个简单的形式：在每个市场领域，该细分市场中所有消费者都有一个占主导地位的公司。通过细分市场，除了主要的公司以外，所有人都最大程度地竞争了消费者的业务，将价格设定为相等的边际成本。因此，信息被用于扩大竞争。这种细分同时产生有效的分配，并为每个公司的最小利润提供了分配。
I characterize the consumer-optimal market segmentation in competitive markets where multiple firms selling differentiated products to consumers with unit demand. This segmentation is public---in that each firm observes the same market segments---and takes a simple form: in each market segment, there is a dominant firm favored by all consumers in that segment. By segmenting the market, all but the dominant firm maximally compete to poach the consumer's business, setting price to equal marginal cost. Information, thus, is being used to amplify competition. This segmentation simultaneously generates an efficient allocation and delivers to each firm its minimax profit.
