 Capitalism is often defended by saying that it maximally extends people’s freedom, understood as the absence of interference. Socialism would allegedly depress that freedom by prohibiting or limiting capitalist activities such as setting up a private firm, hiring wage workers, and keeping, investing, or spending profits. Socialists generally acknowledge that a socialist economy would severely constrain some such freedoms. But they point out that capitalist property rights also involve interference. They remind us that “private property by one person presupposes non-ownership on the part of other persons” (Marx 1991: 812) and warn that often, although 