> This merge to PoS is just exposing that people with wealth always have a say on how the system works, whether it is miners or stakers it was and is always controlled by few .

Miners nor stakers can decide how the system works, Ethereum does not have on-chain governance. 51% of miners/stakers can't just post invalid blocks crediting them with free money nor can they force anyone else's wallet to do anything that wasn't signed by the private key. The worst you can really do is refuse to include transactions in your blocks for as long as you are controlling the network, all it takes is one honest actor to include your transaction and it will finalize.