"even though you actually earned that money, it doesn't belong to you" But that's valid for a lot of things. Say, although you own a land, you still have to pa

"even though you actually earned that money, it doesn't belong to you" But that's valid for a lot of things. Say, although you own a land, you still have to pay taxes on it, and if you won't, in the long run it will be forcefully seized from you. It's just how the society was designed (or "evolved into", if you please), with its laws that we, for the most part, just come to accept. Similar acceptance exists and/or can be (not that it should be) further extended for many other instances. The only necessary thing for imposing such an order is power. An authority has the power over land owners, thanks to the nature of that owned good - being immobile and having an intrinsic value. Now, given the right kind of power, a similar order of things can be forced on pretty much everything!