A conventional wisdom in economics posits that more intense market competition, measured in almost any way, reduces firm profit. In this paper, we challenge this conventional wisdom in a simple Cournot model with strategic R&D investments wherein an efficient firm (dominant firm) competes...

In this paper, I investigate endogenous roles in a mixed duopoly, where private and state-owned public firms compete, by allowing two production periods. I find that many equilibria exist, including the Cournot-type equilibrium and one Stackelberg-type equilibrium where the public firm becomes...

I investigate the effect of exclusive territories, which are typical vertical controls imposed by upstream firms. Using shipping spatial models, I consider an industry that consists of many independent local markets. An upstream monopolist restricts competition between downstream firms using...

We investigate a model where two firms choose whether to acquire information on a common competitor. We find that strategic complementarity on information acquisition exists, yielding multiple equilibria. In addition, we investigate welfare implication of information acquisition. We find that...