We analyze a model of oligopolistic competition with ongoing investment. Special cases include incremental investment, patent races, learning by doing, and network externalities. We investigate circumstances under which a firm with low costs or high quality will extend its initial lead through...

This article studies several attributes of a firm's long-run decisions about organizational structure, attributes that affect the firm's short-run innovative activity. We focus on flexibility, which lowers the future costs of implementing innovations, and research capabilities, which improve the...