This paper compares the impacts of traditional one‒way access obligations and the new regulatory scheme of co-investment on the roll-out of network infrastructures. We show that compulsory access leads to smaller roll-out, first because it reduces the returns from investment, and second...

We consider some two dynamic models of entry in mobile telephony, with and without strategic pricing, and taking into account market penetration at entry, locked-in consumers and tariff-mediated network externalities. We show that on/off-net differentials may reduce the possibility of entry if...

We propose a novel approach to the evaluation of new network technologies that combines an engineering cost model with a differentiated multi-player oligopoly model subject to wholesale access regulation. It is based on Hoernig et al. (2010), 1 which examines the cost differentials and...

A country' s competition agency is transversal in the sense of being active in the whole economy. We study the interaction between the competition agency and sectoral regulators and establish a scope for sectoral regulators to crowd out each other 's efforts: More effort on monitoring...