We provide a simple model of endogenous product compatibility choice under Cournot competition with a network externality. Using the model, we consider how the degree of a network externality and product substitutability affects the choice regarding product compatibility. In particular, if the...

This paper first presents the optimal conditions for strategic R&D investment policy in the cases of noncooperative and cooperative R&D investment policies with international rivalry. Then we deal with a model of strategic product (i.e., quality-improving) R&D investment competition. In...

Applying a standard model of endogenous quality choice to the case of multiple national markets (i.e., a developed and a less developed country), we consider the effect of an economic integration (i.e., a movement from segmented markets into a single integrated market through the removal of...

By focusing on the constructive and combative spillover effects of the firms’ investment in research and development (R&D), we develop a horizontally differentiated duopoly model in which R&D investment used to improve product quality influences consumer preferences and the choice of...

This paper analyses whether laissez faire is superior to tariff protection in the long-run, provided that the government of an importing country cannot precommit to an ex ante optimal tariff rate. We consider the cases of perfectly competitive foreign exporters and a monopolistic foreign...

We apply a model of an environmentally differentiated duopoly to the analysis of environmental policy in the form of a subsidy/tax on consumers based on emission levels of products. More specifically, we consider environmental and welfare effects of subsidizing consumers who purchase...

The purpose of this paper is to analyze the optimal export policy in a two-stage game in which a domestic and a foreign firm compete in price and R&D investment. Under international Bertrand duopoly, an export subsidy directly promotes excess price competition, as delineated by Eaton and...

This paper analyzes the choice of import tariffs and production subsidies to provide optimal protection of domestic industry in the presence of oligopolistic competition, provided that there is a difference in costs between domestic and foreign firms. We show that the choice of optimal...

Employing an environmentally differentiated duopoly model, we analyze how emission standards affect imports, the environment, and social welfare. We show that a strict emission standard is not necessarily import-restrictive, whereas it may possibly degrade the environment. Furthermore, we...

Employing an environmentally-differentiated products model with heterogeneous consumers in terms of environmental consciousness, this paper examines the effect of a unilateral change in a home emission standard on the qualities of products, aggregate emissions, and welfare of both home and...