Casinos should be the one to regulate about gamblers losses but unfortunately, there is such a thing as privacy concern and protecting data of their customers, it's like a bank where they need to protect their clients because these casinos rely heavily on their high rollers and high rollers do not want to public what they spend in gambling.
With this kind of proposal, the casino needs to reveals that information once the government ask them.
Though I do agree that it should be the house that supposedly handled this case and start providing such treatments to avoid heavily addictions.
If that is the case then gamblers will limit themselves or look for underground casinos so they can keep their credentials majority of high rollers do not want their financial status, casinos will protect their high rollers they rely heavily on their high rollers for-profit and they want to keep it that way.