Cavagnac, Michel and Cheikbossian, Guillaume (2013) Merger, Product Differentiation, and Trade Policy. LERNA Working Paper, n. 13.06.393

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Abstract

In a two-stage game with three firms and two countries, we study the profitability of
a domestic merger in the context of an international oligopoly game with differentiated products and in a strategic trade policy environment. In contrast to a completely unregulated economy, we show that the domestic merger under Cournot competition is always profitable to the host country irrespective of the degree of product differentiation. Furthermore, it is also profitable to the competing country - hosting one firm only if products are sufficiently differentiated. Under Bertrand competition the merger is always profitable to both countries independently of the
product range rivalry. But in a strategic trade environment it is more profitable to the country in which the merger occurs than to the other country.