The Outer Space treaty doesn't prevent one from owning property in space. But that's not the main issue. The main issue is that until another company opens up

The Outer Space treaty doesn't prevent one from owning property in space. But that's not the main issue. The main issue is that until another company opens up shop on Mars, you literally have nowhere to go, and the colony will be dependent on earth for quite some time. What will happen if Elon doesn't like what they're doing and threatens to withhold supplies? rockets? Internet?