a natural monopoly market. We emphasize that subsidy competition between governments can serve to coordinate the entry …

, suffer a loss, that is not offset by gains to the monopolist. This is the "deadweight loss" from monopoly, and in … conventional analysis the only social cost of monopoly. The loss suffered by those who continue to buy the product at the higher … cost is regarded merely as a transfer from consumers to owners of the monopoly seller and has not previously been factored …

absolute margin. We derive these results in both a monopoly model and a variety of different competitive models. We conclude …

include pre-existing monopoly power as well. We show that the existence of monopoly power has two offsetting effects on … welfare. First, the environmental policy reduces monopoly profits, and the negative effect on income increases labor supply in … interaction with the pre-existing monopoly distortion further exacerbates the labor supply distortion. This second effect is …