Some of them choose to continue playing other gambling games to see what offers they can get because many want an additional balance in their account or get a free bonus from the casino. This triggers many gamblers to spend most of their time gambling and makes them forget when to stop.
Gambling in general has a kind of adictory spirit that when eventually used to may lead to having bad consequences, bit I don't blame those gamblers involved as well all because some casino games are also inevitable, there is joy and pleasure in playing them, one cannot afford missing out playing on a daily basis with several attempts despite if winning or loosing, that's why you see some of the gamblers don't even care if they are loosing, yet they keep playing all because of the satisfaction in those casinos are found enticing enough to be unavoidable.