~snip~
It is always luck, and the odds are against the gambler.
In the rare situation that a gambler ends up winning a large amount, the casino will be quick to give them food and drinks for free so that they stay for as long as possible.
It makes gamblers feel comfortable with all the services from the casino so that they will return to gambling and continue playing the previous game. But they should still be able to rest after the previous game so that their emotions can subside and they are ready to play in the next round. If they force themselves to gamble again when their emotions have not really decreased, it will only make them want to chase another win. But this will not happen to successful gamblers because after they win and get money, they will rest, and after they have had enough, they will completely stop gambling and leave the casino.