This paper uses a model of strategic interaction among firms – that set discriminatory and nonlinear prices – together with public information on prices of the plans marketed by the three major mobile phone companies, to assess the extent to which on-net and off-net price differentials in...

Liberalization in telecommunications has led to market competition even at local telephony level. This article deals with a competitor's decision to enter the market, with the later competition in prices, and with the consumers' decision to choose their provider. We assume a deregulated market...

This paper presents a theoretical assessment of the efficiency implications of alternative vertical structures in an industry characterized by a natural monopoly, vertically related to potentially competitive markets (network utilities). Based on the incomplete contracts and asymmetric...