I don't buy the idea that there are no free resources in the world. It seems very obviously false, it seems isomorphic to labor theory of value, and leads to logical contradictions (such that value is not monotonic in effort). At minimum, there are other actors in the world that produce value; take for instance a hen producing an egg. The egg is valuable and is produced by the effort of the hen (scavenging for food). Yet we cannot assign this value to any person, it just comes for free from nature.