There's just no way a weak, decentralized govt can stand up against a modern corporation.
Except by taking their stuff or putting people in jail, of course. The thing missing in your argument is the vast power differential between even a "weak, decentralized" government and a corporation.
It just doesn't matter to us if the jackboot in our v necks is public or private, so we'll take our chances with the govt and try to hang onto it..
Sure, it does. A business's power is far easier to break. Just destroy or take their capital or stop buying their stuff, then they stop making a profit. That jackboot goes away when the business can no longer pay for it. For better or worse a small group of people can considerably harm even a large business, if they target it with effective sabotage or high profile bad publicity.