We investigate a Stackelberg oligopoly model in which m leaders and N-m followers compete. We find an asymmetric welfare implication of the Stackelberg model. Introducing a small number of leaders into the Cournot model can reduce welfare. However, introducing a small number of followers into...

We investigate the relationship between the Herfindahl-Hirschman Index (HHI) and welfare. First, we discuss the model wherein m leaders and N - m followers compete. Daughety (1990) finds that under linear demand and constant marginal cost, the Stackelberg model yields larger welfare and HHI than...

We investigate a Stackelberg oligopoly model in which m leaders and N-m followers compete. We find an asymmetric welfare implication of the Stackelberg model. Introducing a small number of leaders into the Cournot model can reduce welfare. However, introducing a small number of followers into...

This article formulates a mixed oligopoly in which a public firm competes with two private firms that may adopt corporate social responsibility (CSR). We investigate the optimal privatization policy and find that, depending on the magnitude of CSR, the optimality of either nationalization or...

Price competition is more intense than quantity competition in private oligopolies, wherein all firms are profit maximizers. However, in mixed oligopolies where one state-owned public firm competes with profit-maximizing private firms, price competition may not provide tougher competition than...

We investigate a free-entry market in which incumbents engage in lobbying for changing regulations, which affect the cost of all firms equally. We find that incumbents have incentive to weaken or strengthen regulations, depending on the demand condition.

This article presents a model in which two downstream firms compete in a differentiat-ed product market and choose whether to adopt new advanced inputs supplied by the monopolist, while standard inputs are competitively supplied. When the monopoly sup-plier is independent, from the welfare...

The recent developments in information technology (IT) have enabled firms to employ personalized pricing. Should all firms employ personalized pricing even though the adaptation costs of such pricing strategies are not high? This paper theoretically demonstrates a situation in which all firms do...

We revisit works by Pal and Matsushima, which, respectively, present different equilibrium locations. We consider nonlinear transport costs and show that Pal's result (dispersion) is more robust than Matsushima's (partial agglomeration). Pal's result holds true for any transport cost function,...

The recent developments in information technology (IT) have enabled firms to employ personalized pricing. Should all firms employ personalized pricing even though the adaptation costs of such pricing strategies are not high? This paper theoretically demonstrates a situation in which all firms do...