In general, for someone who gambles, the main goal is to make a profit or multiply the money he brings when he visits there.
like the case you described, perhaps only a small number of people actually know that they will lose when gambling, so they use their winnings as a tool to extend the duration of the game there. Actually, in my opinion, it's not good if you play in a casino for too long, because you also remember that you still have family left behind, no matter how rich you are and how much you spend to have fun playing the game.
That is the main goal of all gamblers, I am sure that even someone who gambles with the aim of having fun they will definitely want a win in their heart there is no way they don't want a win. Because the victory in gambling is one of the points of pleasure of every gambler. There are many gamblers who do not realize that the gambling they do will mostly end in defeat, especially with those who gamble for the sole purpose of making money or winning. People who gamble with the aim of making money or getting a win most likely they will not be able to accept the defeat that is clearly going to happen, and their attitude that cannot accept defeat will make it difficult for themselves.
If they do win, there is a possibility of either withdrawing or continuing the gambling session. But the best choice is to withdraw it because I'm sure we all know that the winnings that have been obtained can be lost again when they continue gambling, because in my opinion they will be more aggressive when gambling after getting a win.