The US government could do alot of things. But we're reaching a point where transnationalism is a thing (or have reached that point). Some corporations can now, and will in the future, operate with limited government influence, as those corporations have more leverage against government than government has against them.

What percentage of SpaceX revenue is currently provided by the US DoD? Can the DoD currently replace the services SpaceX provides?

Now fast forward a decade or two and run the math again.

Human systems of governance aren't well equipped currently to manage multinational corporations with GDPs that would put them in the G20, nevermind multiplanetary corporations with G7 level economic influence.