We model competition between two firms in a vertical upstream-downstream relationship. Each firm can pay a sunk cost to enter the other's market. For equilibria in which both firms enter, the downstream price can be lower than the joint profit maximizing level, and coordination (e.g., through...

We examine how forward contracts affect economic outcomes under generalized market structures. In the model, forward contracts discipline the exercise of market power by making profit less sensitive to changes in output. This impact is greatest in markets with intermediate levels of...

We develop a stylized model of a Schumpeterian industry, characterized by cumulative innovation and a succession of incumbent monopolists, to address issues in competition policy toward abuse of dominance. Incumbents' R&D investments increase future social surplus flows as well as the...