In the future, KYC will become universal standard on centralized platforms. Governments enforce the laws then companies have to obey local laws if they don't shift their companies to other nations.
So far the government has enforced this rule in several countries for exchange platform. When the owner does not comply with the applicable rule, the site will be banned from operating in that country and may be blocked by the government. But I don't know whether for countries that legalize gambling whether KYC rule have been applied or not, but I believe the rule have something to do with tax rule.
^ Definitely right because gambling site owner was following the rules of law there is no exemption on it as long as you are custodial services and AML compliance has become compulsory for anyone even though you are using cryptocurrency. Just because it will protect both of us the owner and the users from financial criminals who want to take advantage. But for now, still, you have a choice, either you will go on the gambling platform that require KYC or choose the brisk one which does not have a license and did not require AKYC.