We characterize and compare the private and social incentives to collect consumer data by a vertically-integrated online intermediary who competes with third-party sellers listed on its platform and is required by regulation to share with rivals all the information it gathers. With linear...

A monopolistic information provider sells an informative experiment to a large number of perfectly competitive firms. Within each firm, a principal contracts with an exclusive agent who is privately informed about his production cost. Principals decide whether to acquire the experiment, that is...