Strategic Product Choice in Differentiated Markets
研究了寡头企业在产品选择中如何战略性处理新旧产品关系，发现无市场规模差异时，集群或市场入侵是纳什均衡解。
Widespread diversification of firms compels viewing them as a portfolio of activities rather than as entities competing independently in separate markets. This paper posits that product specification or product choice is a distinct strategic variable. In particular, the optimal relationship between the new and existing products of an oligopolistic firm is examined. In the absence of market size inequalities, clustering or market invasion is shown to be the Nash solution to the product-choice game when firms play strategically. Copyright 1987 by Blackwell Publishing Ltd.