GPU or ASIC...it makes no difference once the farms start mining. In Ethereum it only takes 3 of the major pools to make decisions on a specific fork for the entire network.
Bitcoin is same.
Crypto is centralized where the few decide the fate of the many, decentralization is an illusion.
So we need more pools. I wish most pools are honest and can attract more users and distribute them.
Ideally, we need hundreds of pools and the miners are also well distributed. I heard there are some solo mine coins.