Product Differentiation and Profitability: An Asymmetric Model
构建了一个非对称产品差异化模型，假设部分客户服务成本更高，发现利润与服务难度负相关，且利润与市场份额负相关，为合谋与效率差异之争提供了新视角。
The purpose of this paper is to develop a model of product differentiation in which there is an asymmetry, namely that some customers are easier to serve than others. It turns out that profits are negatively related to difficulty of service, and that profits and market share are negatively related. The results of this model are used to shed light on some aspects of the collusion versus differential efficiency debate, and are also compared with vertical product differentiation models. Copyright 1990 by Blackwell Publishing Ltd.