Thursday, August 18, 2016

Leveraging Dominance with Credible Bundling

Sjaak Hurkens, Institute for Economic Analysis-CSIC; Barcelona GSE, Doh-Shin Jeon, Toulouse School of Economics (TSE); Centre for Economic Policy Research (CEPR), and Domenico Menicucci, Universita' degli Studi di Firenze are Leveraging Dominance with Credible Bundling.

ABSTRACT:  We contribute to the leverage theory of tying by studying bundling of a dominant firm instead of a monopolist. We show that, when one firm has symmetric dominance across all markets, bundling has a positive demand size effect on the dominant firm but affects both firms similarly through the demand elasticity effect. The demand size affect is hump-shaped in dominance level whereas the demand elasticity affect is increasing and negative (positive) for low (high) dominance levels. This makes bundling credible for sufficiently strong dominance. In the case of asymmetric dominance levels, we identify three different circumstances in which a firm can credibly leverage its dominance in some (tying) markets to foreclose a dominant rival in other (tied) markets. Our findings provide a justification for the use of contractual bundling for foreclosure.

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