The Evolution of Market Structure when There is a Sequence of Innovations
研究当存在连续创新机会时，市场结构如何演变：一家企业是否会持续领先而变得日益主导，还是技术领导权会在“行动-反应”过程中不断易手。通过一个简单的双寡头模型，发现答案取决于产品市场行为的性质：高度竞争行为导致主导地位增强，而古诺行为可能导致行动-反应。
The paper explores the question of how market structure evolves when there is a sequence of opportunities to innovate. Does one firm extend its technological superiority to become increasingly dominant, or does technological leadership constantly change hands in a process of "action- reaction"? A simple duopoly model is proposed, in which the answer to this question depends upon the nature of product market behaviour. In that model, highly competitive product market behaviour leads to increasing dominance, whereas Cournot behaviour may lead to action-reaction.