Commissioner Rosch, Rhetoric, and the Relationship Between Economics and Antitrust

Economic theory is essential to antitrust law.  It is economic analysis that constrains antitrust law and harnesses it so that it is used to protect consumers rather than competitors.  And the relationship between economics and antitrust is responsible for the successful evolution of antitrust from its economically incoherent origins to its present state.  In my view, which I’ve expressed in greater detail elsewhere, the fundamental challenge for antitrust is one that is created by having “too many theories” without methodological commitments from regulators and courts on how to select between them.  The proliferation of economic models that came along with the rise of Post-Chicago economics and integration of game theory into industrial organization has led to a state of affairs where a regulator or court has a broad spectrum of models to choose from when analyzing an antitrust issue.

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