This paper studies the incentives of an unregulated monopolist to undertake the socially optimal investment in NGA … networks when it takes into account the fact that the NGA deployment is a two-dimensional investment decision concerning both … socially optimal investment decisions result in a geographically differentiated NGA deployment implying that different quality …

of the investments, with the complementary probability. It is found that when the slope of the marginal investment cost … the socially optimal investment level. On the contrary, in a more realistic case when the impact of investments on demand … is low in relation to the slope of the marginal investment cost function, the incumbent may overinvest or underinvest …

particular, it focuses on broadband investment made by entrants. Starting from late Nineties telecommunications incumbents of … negative or null impact of unbundling obligations on incumbents’ investment, research on the relationship between LLU and new … entrants’ investment, albeit growing, has not yet reached a coherent body of results. We have tested two propositions. First …