False dichotomy.
The government doesn’t have to be in unilateral control for us to admit that citizens would have a very difficult time fighting the extremely well funded and trained military. (For the most part, they wouldn’t need to anyway, they have control of something far more powerful... banking, they’d freeze your funds and you’d be done for).
It doesn’t follow that a government that you can’t fight via conventional means gives the populous no recourse. Voting rights are still the law of the land here and civil disobedience has been effective in the past.
Secondarily it could be argued (very easily) that second amendment in the USA is about the right to maintain well regulated local militias, which at the time would have been populated by yeoman farmers bringing their own weapons.
Historically this is relevant because the revolution was fought by exactly such a set of militias on the continental side, and the British obviously thought this was an illegal action. So they needed a clause “this thing we’re doing is legal and legitimate.”
Buut there’s a difference here between a militiaman with a musket that can fire maximum 3 shots per minute, as part of the local defense force, and an independent yobbo with a hundred of round per minute assault rifle.
But no one focuses on the part of the second amendment that pertains to ‘well regulated militias’, it’s almost as if an industry that makes something with a limited audience outside of military and law enforcement has an agenda and is influencing the debate.