No abstract

This paper demonstrates that low (below marginal cost) interconnect or access charges can be used to sustain high subscription prices in an environment of network competition with two-part tariffs and price discrimination. This result stands in contrast to other results in the literature suggesting that high interconnect charges can play a collusive role. Journal of Economic Literature Classification Numbers: L41, L96.

We study a two-period model of spatial competition with two symmetric firms where firms learn customers' preferences from the first-period purchase, which they use for personalized pricing in the second period. With product choice exogenously fixed with maximal differentiation, we show that there exist two asymmetric equilibria and customer switching is only from one firm to the other unless firms discount future too much. Firms are worse off with such personalized pricing than when they use pricing at higher levels of aggregation. When product choice is also made optimally, there continue to exist two asymmetric equilibria given sufficiently small discounting, none of which features maximal differentiation. More customer information hurts firms, and more so when they make both product choice and pricing decisions.

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In recent times, pairs of retailers such as supermarket and retail gasoline chains have offered bundled discounts to customers who buy their respective product brands. These discounts are a fixed amount off the headline prices that allied brands continue to set independently. We show that a pair of firms can profit from offering a bundled discount to the detriment of other firms and consumers whose preferences are farther removed from the bundled brands. Indeed, when both pairs of firms negotiate bundling arrangements, there are no beneficiaries and consumers simply find themselves consuming a sub‐optimal brand mix.