For two years now, I have no doubts that KYC will be mandatory in all casinos, because governments require KYC in the case of physical casinos and it would not make sense for them to turn a blind eye to online casinos.

The same happens with exchanges, in the real world governments require real-world exchanges to request KYC from their customers, so it would not make sense for them not to also require online exchanges to do KYC from their customers. The reality is that KYC is here to stay, there is no way around it.