I am not very much familiar in gambling casinos but there should be an attending physician to check if any one of those people gambling in their vicinity will show bad symptoms of excessive gambling, that guy has little support coming from his family, they should have seen the first sign if the guy is gambling excessively.
As far as casinos concerned they won't see that or look on that matters since gamblers choose to stay and play, it will not be checked unless this issue will happen along the way, it's the gamblers responsibility to control their emotions in order not to let this things happen physical health should be in place even you are dealing with this activities.
When it comes to this business, casinos are treating the gamblers as professional who are matured enough to handle their emotion.
They don't care about the personal life of a gambler, all they want is just the relationship during the gambling session and casino's are profit oriented, they will not stop what they think that are helping them to maximize their profit.