We analyze collusion in an infinitely repeated Bertrand game, where prices are publicly observed and each firm receives a privately observed, i.i.d. cost shock in each period. Productive efficiency is possible only if high-cost firms relinquish market share. In the most profitable collusive...

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...

We analyze the productivity of information technology in emergency response systems. ``Enhanced 911" (E911) is information technology that links caller identification to a location database and so speeds up emergency response. We assess the impact of E911 on health outcomes using Pennsylvania...

This article studies the determinants of commercialization strategy for start-up innovators. We examine whether the returns on innovation are earned through product market competition or through cooperation with established firms (through licensing, alliances, or acquisition). Our hypotheses are...

We analyze vertical integration to compare outcomes under upstream competition and monopoly. This is done in a model based on the property rights approach to firm boundaries and where multilateral negotiations are modelled using a fully specified, noncooperative bargaining game. We demonstrate...

The prevailing theory of the firm demonstrates that ownership by dispensable, outside parties is inefficient relative to ownership by productive agents. To better understand observed patterns of ownership, I analyze markets for ownership, demonstrating that outside parties will often become...