You seem to discard that in a democracy, one person should get one vote. In crypto, you vote with your wallet – due to network effects – so the richest/most powerful weight the most.
Not necessarily - this depends on the chain and protocol.
For example governance of ETH is off-chain, and there is no token voting. Developers come to a consensus and create new spec as a fork, clients and ecosystem may decide to follow that new spec and implement the changes (or they may fragment, as was the case of ETC).
For example governance of ETH is off-chain, and there is no token voting. Developers come to a consensus and create new spec as a fork, clients and ecosystem may decide to follow that new spec and implement the changes (or they may fragment, as was the case of ETC).