@Naficopa: tax avoidance is not in my book. Anonymous can be in any form. I know many betting site that slightly encourage slight kyc like phone number. Sooner kyc may be knocking on our doors. Who knows what can happen next.
I didn't mean to encourage tax avoidance, but I think anonymity can be encouraging for many people.
Certainly, introducing verification in small steps will be practiced. Bookmakers realize that by introducing a verification order overnight, especially in crypto, they will lose a very large proportion of their users, if not the majority.