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...

We show how collusive outcomes may occur in equilibrium in a one-period competitive insurance market characterized by adverse selection. We build on the Inderst and Wambach (2001) model and assume that insurees must pay a minimum premium, which is a common feature in many health systems. In this...