We are now in a new gilded age of wealth and power similar to the first Gilded Age, when the nation’s antitrust laws were enacted. The political effects of concentrated economic power are no less important now than they were then, and the failure of modern antitrust to address them is surely related to the exercise of that power itself. In this new gilded age, we should remind ourselves of a central guiding purpose of America’s original antitrust law and use it no less boldly.