4. What is the optimal level of enforcement?

‘What is the optimal level of enforcement?’ focuses on competition law enforcement. All competition jurisdictions acknowledge the central and crucial role of economic analysis in shaping competition prosecution. Greater economic understanding has improved the structure of competition law through legal presumptions and thresholds, enforcement guidelines, and a greater understanding of the gravity and consequences of anti-competitive activities. Indeed, there has been an ever-increasing ‘economization’ of antitrust, as more jurisdictions rely on economic analysis to determine whether intervention is needed. When markets work well, competition enforcers are better off adopting a ‘laissez-faire’ approach (leaving the market to take its own course). Distinguishing pro-competitive activities from anti-competitive activities poses a challenge.