The bearing of these claims on the moral validity of equal opportunity norms is supposed to arise from the consideration that if one legitimately owns property, one is not morally bound to use it in ways that satisfy equality of opportunity. If one owns a factory, one may let it sit unused and allow no one to trespass on the premises, or one may invite anyone one chooses to enter the premises and work in the factory one owns on any mutually agreeable terms. One's Lockean rights fill the moral space that conceptions of equal opportunity are thought to occupy and as it were leave no room for them. Just as one may choose to become friends with anyone on any mutually agreeable terms, rather than offer one's friendship to all who might wish it and to choose among applicants according to the merits of the applications, one may do the same with any property one owns.  Lockean property rights preclude its being the case that anyone is morally entitled to be treated according to equality of opportunity norms or that anyone is morally obligated to treat anyone according to such norms (unless one has signed a contract or promised to do so).