Cryptocurrencies are against their goals but they cannot erase or eliminate crypto from people's lives and in the gambling industry.
Precisely if they try hard and oppose crypto continuously then there is no doubt that they will be the ones who will disappear from the gambling industry.
Assuming that gambling sites and casinos will accept CBDC, the more I believe that it will increase the use of crypto than see its collapse. The fact that the gambling industry is growing, the more we think that several options will arise rather than seeing reducing. Well, the goal of these gambling sites' owners is to give a convenient way of betting and they are supposed to give the best option if possible.