Bitcoin was designed so that it is the miners who vote. If 51% of the miners agree to a rule change, then that rule change happens. Yes pools may become somewhat cetralized, but they are comprised of individuals who can move to different pools.
So? How to do this? When the Foundation is building shit, for example putting something in the official client that the community doesnt like, and i believe the foundation practically controls the client because the coders are in the foundation too, then how should the 51% react?
And would 51% react at all? Or simply download the newest client and live with it?
But even when... so how to fork? I mean the official client has no functionality included to fork the chain isnt it? But all miners and all wallets need to switch to the fork... otherwise they still would use the official chain.
This isn't even remotely close to being true. Miners do not vote on rule changes.
No one, not the developers, not the foundation, not the miners, not anyone, can force a rule change on you.