Totally depends on the mind of a certain gambler because there are ones who are trying out to win up their games just because they do want to prolong the duration of their session on doing gambling
on which they've been already accepting that they would be losing in the end and they dont really care about on getting home with positive profits but well majority would really be hoping that they would really be able to get up such profits specially huge ones. It is really just that the main common issue for most people is that we do become that too greedy on the time that we are on a winning condition. You would really be that impulsive on which it do comes into a point that controlling yourself would already be an issue and this is why they would really be having that kind of approach on things on which it would really be that common approach to have.
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.