We do not own more than an upper ceiling of land

We do not own property, in the conventional sense, if the Government does not recognise our claims to the land. And if the land ownership is too not recognised by others then it cannot reliably be said to be owned. By definition, like all things, property claims are a matter of opinion. Generally it is held that the Government authority in a jurisdiction will make the final ruling, that is the Government dictates what property is owned by whom. If we own property it is our view that no one, not even the Government has a rightful claim over (and above) that which we make for ourselves. We might not think that someone with an excess of land is the true owner.

We can only own land if we do not claim an excess.