In recent years, progressive public intellectuals and prominent scholars have asserted that monopoly power lies at the root of wealth inequality and that increases in antitrust enforcement are necessary to stem its rising tide. This claim is misguided. Exercises of market power have complex, crosscutting effects that undermine the generality of the monopoly regressivity claim. Contrary to what the regressivity critics assume, wealthy shareholders and senior corporate executives do not capture the preponderance of monopoly rents. Such profits are broadly shared within and dissipated outside the firm. Further, many of the subjects of antitrust law are middle-class professionals, sole proprietors, or small business owners who extract rents fro...