I mean, you are talking as if the rules governing the use of property are a natural kind. As if there is one and only one set of terms and conditions which app

I mean, you are talking as if the rules governing the use of property are a natural kind. As if there is one and only one set of terms and conditions which apply to any sale of anything at anytime. The concept of "property" and the specific set of rights and obligations surrounding it are created by people, and can (and have been) rewritten all the time.