A Two‐Country Game of Competition Policies

Recently a number of studies have recognized that trade policy can be substituted for by competition policy. This study demonstrates, however, that there is a fundamental difference in the working of terms‐of‐trade effects between competition policy and tariff policy and that if countries optimally set their respective competition policies, it is unlikely to result in a tariff‐war‐like state in which all countries adopt distortionary policies. Instead, in a Nash equilibrium, one country maintains perfect competition in its domestic service sector while the other country tolerates imperfect competition.     

Trade imbalances and harmonization of competition policies

The present study constructs a game in which the two countries strategically set competition policies in their respective non-tradable service sectors. These policies affect the countries’ utilities through the presence of trade imbalances. We demonstrate that in the presence of persisting trade imbalances, in a Nash equilibrium, the trade-deficit country maintains perfect competition while the trade-surplus country restricts competition. This shows it highly difficult to harmonize their policies to achieve the first best state under the current international trade regime, which is centered around the principle of reciprocity.