(with price and quantity competition) and optimal regulation that involves an informational externality to the competitors …We study the regulation of a firm which supplies a regulated service while also operating in a competitive, unregulated …. Although joint conduct of the activities generates scope economies, it also entails private information, so that regulation is …

intervene in such market situations and if they intervene, what respective roles regulation and competition law should play … analyses how market power is controlled at the intersection between competition law and regulation in EU competition law and in …

(with price and quantity competition) and optimal regulation that involves an informational externality to the competitors …We study the regulation of a firm which supplies a regulated service while also operating in a competitive, unregulated …. Although joint conduct of the activities generates scope economies, it also entails private information, so that regulation is …