~snip~
This would help a lot of people around the globe to maintain control over their asset and help them set the right thing to do in case when the limit have been reached. But, I think this would be hard to be implemented because, I think, it would mean less opportunity for the gambling organizers to earn more profit, it is either they would implement it themselves' which is less possible, or a regulating body would take charge.
Even if the gambling site makes an easy way to prevent members from gambling, if the gamblers don't have self-control, that gambler will always gamble and use more money. If there is a prohibition or limiting on using the money for gamblers or the account will freeze by itself if the gamblers break the limit, that doesn't mean the gamblers will stop playing gambling. They will open a new account in the other days to play gambling, and that will happen like that over and over. So every gambler really needs to have self-control over themselves.
Gambling sites should apply a life status check from every players who've been playing with them. With this strategy it could control more gamblers aggressiveness on betting even though beyond of his capacity to bet. KYC and proof of legit income must be a strict requirements in order to be registered for any crypto gambling websites, and failure of completion will dealt to have no access on the website.