The efficiency argument for profit maximization says that corporations and their managers should maximize profits because this is the course of action that will lead to an ‘economically efficient’ or ‘welfare maximizing’ outcome. In this paper, I argue that the fundamental problem with this argument is not that markets in the real world are less than perfect, but rather that the argument does not properly acknowledge the personal sphere. Morality allows each of us a sphere in which we are free (...) to pursue our personal interests, even if these are not optimal from the social point of view. But the efficiency argument does not come to terms with this feature of social life. (shrink)