As the land is not something that you created your 'ownership' of it is simply a grant from the commons. Unless I am misinformed this is explicitly the case in the US as far as many tracts of land in the mid-west are concerned, the federal government granted parcels of land to those who would settle there.

The point is that because it is a grant from the commons there is no natural law that says that that grant cannot be handled in a different way than it is now.

If society as a whole decides that this grant is no longer to be regarded as absolute then there is no barrier to taxing the occupier of the land.

In the US (and most countries), land "ownership" is already a perverted notion. You often must pay personal property tax on the land you "own", the government, through eminent domain, can take the land you "own", etc.