This article develops an analytical framework that can be used to assess competition in South African telecommunications and, thereafter, applies this framework in an evaluation of vertical integration patterns in the telecommunications industry. It is shown that, despite recent regulatory...

A vertical merger model represents a complex system built on (i) a network of e.g., upstream manufacturers and downstream retailers (ii) who bargain bilaterally in the presence of externalities (iii) created by competition between downstream retailers (iv) facing a consumer demand surface. We...