The relationship between economic welfare and the number of firms in a quas i-Cournot market is examined. The authors presuppose the existence of a strong ( "first-best") government that can enforce themarginal-cost principle along wi th regulating the number of firms. It is shown that there...

We consider the effects of free entry on the market structure and social welfare of an asymmetric Cournot oligopoly. Even if we allow for the existence of different types of firms initially, only one type (in almost all cases) can survive in the long run. Free entry leads an economy to a...

In this paper, we establish the most possilbe general formulation of the technology governing carbon-gas emission, giving rise to global external diseconomies, and ty to explore into the strategic interactions,both domestic and international, when an individual country decides on the...

This paper investigates the desirable roles of both public and private firms with increasing marginal costs in mixed duopoly. In contrast to Pal [1998] and Mat- sumura [2003a], who use the constant-marginal-cost model, we show that it is possible for each firm to prefer the role of either the...