A series of features makes the mobile telecommunications industry an
interesting field of investigation for economists: the industry is experi-
encing veryfastmarketgrowthcombinedwithrapidtechnological change;
regulatory design in setting market structure is playing a very important
role; and oligopolistic competition is unfolding under various forms. The
number of subscribers to mobile networks is growing at a rapid rate on a
worldwide basis, as shown in figure 1.1.
