Why the Atlantic Divide on Monopoly/Dominance Law and Enforcement Is So Difficult to Bridge

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The EU’S recent antitrust fines against several leading international tech and plat-form firms are startling. But why are these firms penalized in the EU for dominance “abuses,” yet they go unscathed in the United States for the same or similar practices? In the midst of these dramatically different outcomes, both jurisdictions, at least publicly, continue to seek convergence on monopoly/dominance law and policy to the extent feasible. The goal of this article is two-fold: first, to provide a summary of where full or partial convergence has occurred; second, and perhaps more importantly, to detail the procedural and substantive areas of continued divergence.