Abstract The Internet is characterized by competition between platforms which bring together potential partners of exchange. The degree of competition between these multi-sided platforms und market concentration are determined through (1) the strength of the direct and indirect network effects,...

Abstract The liberalization of the German telecommunications sector is widely regarded as a success story, for which the rigorous regulation of essential facilities together with a liberal licensing policy have been responsible. While many telecommunications markets are now highly competitive,...

Abstract In July 2001, the European Commission has published its proposal on new labeling requirements for genetically modified food. In order to reduce informational deficits on consumers’ side, the Commission proposes to decidedly strengthen the current labeling requirements. Our paper...