[pleboidal]

  How are they going to enforce that and
  guard against a revolution?

So, your telling me you want people to fly to Mars, under oath that they will always pay the rent, pay the tithe, and disavow ownership of the equipment their lives depend on, possibly letting others enable or disable it based on fealty and political alignment?

  Who owns the equipment sent from Earth?

The people riding it to Mars and using it when they land. Anything else is pretty much suicide. When you go to Mars, you might not come back. No one wants a EULA between them and their life support system.