We extend the economic theory of regulation to allow for strategic self-regulation that preempts political action. When political "entry" is costly for consumers, firms can deter it through voluntary restraints. Unlike standard entry models, deterrence is achieved by overinvesting to raise the...

Long-term contracts often include most-favored-nation clauses (MFNs), which are nondiscrimination guarantees that obligate a buyer or seller to treat all trading partners symmetrically in pricing decisions. Recent theoretical work has shown that such clauses can facilitate tacit collusion by...