Vertical Integration as a Source of Hold-up: an Experiment

Résumé

In a vertical chain in which two rivals invest before contracting with one of two competing suppliers, partial vertical integration may create hold-up problems for the rival. We develop an experiment to test this theoretical prediction in two setups, in which suppliers can either pre-commit ex ante to appropriating part of the joint profit, or degrade ex post the support they provide to their customer. Our experimental results confirm that vertical integration creates hold-up problems in both setups. However, we observe more departures from theory in the second one. Bounded rationality and social preferences provide a rationale for these departures.