Scarpa, Carlo; Calzolari, Giacomo - Fondazione ENI Enrico Mattei (FEEM) - 2009
We study the regulation of a firm which supplies a regulated service while also operating in a competitive, unregulated … (with price and quantity competition) and optimal regulation that involves an informational externality to the competitors …. Although joint conduct of the activities generates scope economies, it also entails private information, so that regulation is …