individuals must be free to choose, even those who you consider to be 'unstable.' casinos should have facilities for wellness check and exclusion in any case.
wellness check? that i won't expect on any gambling site,. self exclusion that is a common feature you can find. however, do remember that it is still on the gambler"s final decision to alter his lifestyle.
The self-exclusion is a self-decision, only a "stable" individual can hit that button when he thinks that it's the right time, while the other won't do it for their "own-good" until it's incurable already that damages up to selling their properties, bankruptsy, etc.