No-one’s. The question is absurd. It’s not land.
It’s earth. One can ask for room, not ownership.
You can’t own Earth. She gives everyone room.
A request for land is a request for social rights. These requests occur within societies that divide social respectability and power by dividing earth into rooms of social power called land. If your goal is to escape the constraints of such a society, claiming or buying land won’t do it. You will only continue the constraints in another form.
We do it, at best, in the hope of protecting the flow of life between earthly and human spheres in that place, so we can be a part of its flow. This is called life and all creatures need it. When that flow is capitalized, it becomes part of the system of privatization. It’s a tricky balance.
Surely, we can protect that flow together.