Deltas, Salvo and Vasconcelos (2011) develop a model of geographically separated markets with differentiated goods in which collusion (or merger to monopoly), by restricting trade relative to duopolistic competition, is beneficial for society and can be beneficial for consumers. In this chapter,...

The pace at which markets are evolving, thanks to the accelerated adoption of digital technologies, poses important challenges to competition law and its enforcement. This work aims to support this process by building an understanding of the experiences of competition authorities in deciding on...