I think Roobet is more leaning to follow authorities rules with implementing KYC than getting more profit from Non-KYC lover. They don't want any headaches in the future so they rather implement it early on and besides those who trust Roobet will have no problem with KYC implementation. They maybe missing out on those kind of gambler(non-kyc lover) but it is better to be safe from any future problems.
Roobet was one of the earliest big crypto casinos to implement KYC and after that a lot of casinos have followed their way. It is a bit of a pity as the whole goal of crypto casinos was to gamble anonymous compared to fiat bookies while full KYC is always required.
Maybe we can’t totally skip the regulations and that’s why most of the gambling site today slowly implementing the KYC