If you take the view that "land" is where all the matter on earth comes from, it kinda makes sense. It's the strictest interpretation of materialism I've ever heard, though; there would be nothing of value without input of the sun's energy.
The exact proximity of earth to the sun is what gives the land on earth value. In fact, this implies that humans did none of the work, they just took what was already there and labeled it their own.
Not quite, owners DID the work and labeled it their own.