Creation [...] is neither necessary nor sufficient to establish ownership. The focus on creation distracts from the crucial role of first occupation as a property rule for addressing the fundamental fact of scarcity. First occupation, not creation or labor, is both necessary and sufficient for the homesteading of unowned scarce resources.
One reason for the undue stress placed on creation as the source of property rights may be the focus by some on labor as the means to homestead unowned resources. This is manifest in the argument that one homesteads unowned property with which one mixes one’s labor because one “owns” one’s labor. However, as Palmer correctly points out, “occupancy, not labor, is the act by which external things become property.” [...] there is no need to maintain the strange view that one “owns” one’s labor in order to own things one first occupies. Labor is a type of action, and action is not ownable; rather, it is the way that some tangible things (e.g., bodies) act in the world.
Kinsella - Against Intellectual Property [pdf do artigo]