The ultimate objective of the present paper is to empirically investigate the effectiveness of competition policy in developed and developing countries. Although its importance is continuously increasing, the effectiveness of competition policy still seems to lack the attention that it would...

In order to fight collusive behaviors, the best scenario for competition authorities would be the possibility to analyze detailed information on firms' costs and prices, being the price-cost margin a robust indicator of market power. However, information on firms' costs is rarely available. In...