The pursuit of lost money in casinos never leads to good things. After losing money, a person is in a state of emotional excitement, due to which he commits ill-considered and super-risky bets. If a person came to the casino to win back, then he clearly does not understand what he is doing.
someone who continues to gamble with the thought that he will continue to win is pure addiction...
playing gambling is fun when we don't chase money too much from it, most of those who win are those who play casually and don't really chase victory. the story that the OP raised is the phenomenon of a gambling addict who can't control himself and doesn't know when to stop.
When it comes to potential loss then sky would be the limit because we know gambling that as long you do have funds to spent on then that would be the potential money that you can potentially lost when you do play.
So this is why only use up the money which are intently for gambling and not came nor compromising the money you do have as life savings or for emergency.