There's nothing innate to the universe that defines things this way. But they, as a society, have defined things that way. They, as a society, worked together t

There's nothing innate to the universe that defines things this way. But they, as a society, have defined things that way. They, as a society, worked together to build up the infrastructure and the resources that are on top of that infrastructure. And then, as a society, decided what the rules are to participate in that society. So no, there's no universal law that says "the people born here have the rights of this society"; but the people of that society have decreed it so. It's the same way every other right exists. Property rights don't exist as a law of the universe. Rather, "the people" decided they like the stability of having "permanent" control over things so, as a group, decided to enforce those rights.