I think you underestimate the flexibility these miners have and the fact that BTC is a hydra. When you cut 1 head off, 2 more grow back.
Check out what happened to Poolin back in 2022 they got mixed up with shitcoins and suspended payouts to miners. They use to be a large percentage of hash and people moved overnight without a thought. Now this pool is such a small portion. Also pools can always be cloned and made as non-KYC(hydra) So if there’s ever an issue like that, more pools will spawn.