Multinational enterprises (MNEs) have started to populate also regulated sectors. Their linked international activities and credible threats to relocate are then new concerns for regulators. We study a multiprincipal model in which a privately informed MNE (the agent) produces for two countries...

This paper analyses in a hidden characteristic set-up the design of the optimal price for a firm which is a monopolist at home but competes abroad against foreign firms. As long as diseconomies of scope are not too strong, the optimal price is identified. The price rule depends on the sign of...

We study the regulation of a firm which supplies a regulated service while also operating in a competitive, unregulated sector. If the firm conducts its activities in the two markets jointly, it enjoys economies of scope whose size is the firm's private information, unknown either to the...