Multiproduct Pricing Made Simple
研究了多产品企业在垄断、受管制垄断和古诺寡头下的定价问题，利用消费者剩余函数给出最优价格公式，并讨论了一类可处理的偏好形式。
We study multiproduct firms in the contexts of unregulated monopoly, regulated monopoly, and Cournot oligopoly. Using the concept of consumer surplus as a function of quantities (rather than prices), we present simple formulas for optimal prices and show that Cournot equilibrium exists and corresponds to a Ramsey optimum. We then discuss a tractable class of preferences that involve a generalized form of homotheticity. Profit-maximizing quantities are proportional to efficient quantities. We discuss optimal monopoly regulation when the firm has private information about its cost vector and find situations in which optimal regulation leaves relative price decisions to the firm.