Physical property rights are made up too. How can you claim to own something if you aren’t actively defending it nor physically possessing it in that moment.

Do you “own” your house even when you’re not home? Yes, you do, because we all agreed on this made up thing called “property rights” and we pay our tax dollars to have it enforced. Otherwise whoever is in your house “owns” it until you or someone else forcible removes them or convinces them to leave.

All our rules are “made up”.