Not to be paranoid, but there's always the possibility that some government agency has built >>50% of the mining capacity, just in case they want to take contro

Not to be paranoid, but there's always the possibility that some government agency has built >>50% of the mining capacity, just in case they want to take control. And if they're mining with it now (split among pools), this capacity would partially pay for itself. You'd never know they have control until it's too late.