23rd European Regional Conference of the International Telecommunication Society, Vienna, Austria, 1-4 July 2012
In a context of partial …fixed-mobile substitution, we analyze …fixed-mobile bundling and mobile-to-…fixed off-loading in a duopoly model in which consumers buy one or two products. A joint purchase discount mitigates …fixed-mobile substitutability and consequently reduces mobile-only and fixed-only consumers. Practises like introducing a small discount, applied on a bundle of multiple service or mobile-to-…fixed off­loading by both operators are analysed. We …nd that such practises do not have negative impacts on the profi…ts of whole market and lead to both consumers' surplus and welfare gains. The investment incentives in …xed network are positive and can be boosted by FM bundling without considering regulatory intervention and before taking into account of …fixed costs. The investment incentives in mobile network are more likely a situation of prisoners' dilemma where operators should invest as long as there are mobile-only consumers.