That doesn't come up until space is truly independent of Earth, resource wise.
That will be long enough that by the time it happens, they may not have any connections to Earth.
Plus, back on Earth, you have all the normal limitations of the gun barrel. If Nigeria doesn't like what Brazil is doing in space, Nigeria is still going to find it challenging to threaten the Brazilians doing space work with guns.
And to the point being made here, protesters protesting out in front of SpaceX are going to find it challenging to successfully deploy gun-power against them, because the local dominant People with Guns take a very dim view of violating their monopoly... and, likely, SpaceX (here really just any space company) is already acting with their approval.
The net of the complicated web of People with Guns here on Earth still pretty much boils down to the situation I described. Space exploration isn't going to be done by voting or polling, and the Veto of the Merely Loud (among the other vetos) that is so easy on Earth is going to prove quite difficult to project into space. In space, nobody can read your Earth protest sign.