You think we're gonna fight corporations as individuals if we strangle government?
No. Government is our protection from those who would want to consolidate power, especially corporations. I understand that the government often fails at that protection, but it's still a hell of a lot better than being completely defenseless.
The whole point of the founding fathers was to spread power and attempt to keep it spread. They wanted to avoid both the abuses of monarchy and the eventual decapitation of leadership (seeing as how that'd be their heads).