Increasing concern about economic inequality has coincided with an unsettling ascendancy of some large, technologically integrated “super-firms,” which have grabbed large market shares in multiple markets, and cast doubt upon the future viability of a wide range of businesses, many of which have been important local and regional employers. It is thus unsurprising that these two trends have knocked together in public discourse, and that antitrust law been proposed as one way of helping to remedy economic inequality. This essay notes that antitrust law is generally a poor fit for reducing economic inequality, but one aspect is worthy of note: an apparent increase in the capital-labor ratio in many industries, especially in technological indus...