Ban is not a barrier for gamblers to go to an extent in doing things both in the legal and illegal ways, they never mind regretting some steps after taking the actions, but government uas it power to exercise authority in implementing policies to gambling ethics, many have face the law because of violation of the rules surrounding it.
I can't say for sure if you are contradicting or in support but I know that a ban is something that is illegal, it never was supposed to exist and if found with anyone will be brought to justice, so if a circular has been passed around that gambling is prohibited, both the player and the casino has to stop with immediate effect, if at all it is a physical casino, it will be shut down and you will never see anyone in that surrounding, the same thing applicable to online casino, if its a very strict country, they will go to any length to work with Internet providers to block any incoming IP address that is trying to connect because they are the who controls the internet network.
A limitation is another thing, and most often than not, the age is what the government use as a requirement to reduce abuse in gambling, you will see most of the time 18+ as a requirement in most casino before a player can play.
Past are the days when casinos only exist in physical locations across every region, but thanks to development of technology that has served us well with online ones, with this no amount of government restriction could deter gamblers from enjoying the sweetness in this opportunity because we have no KYC casinos that can maintain your privacy with them.
The moment you signed up to any casino, know that you have already broken your privacy, you don't have much to protect but you can minimize it to some extent with a VPN, if they don't require KYC, you can preserve your privacy with it and we do have casino Blackjack.fun as an example who don't request KYC unless they observe a player has been cheating.