Most gamblers find it hard to stop gambling when they win huge amount, even those that were lucky to cashout from jackpot also find it difficult to stop. However it's just the greed in humanity, if we achieved what we have expected or what we don't expect at all we also see it as a good means to grind for more. It's just to understand that we can't continue winning if we are not losing.
I agree with you. As I said in another thread:
https://bitcointalk.org/index.php?topic=5486833.msg64381174#msg64381174 that greed is when you want to get more money than what you have now. And I see many gamblers who become so greedy. They bet beyond their budget and this is the beginning of the problem that will ruin their life. I wonder why many gamblers do not understand that they will not always win the game. When you take your big win and bet bigger, I think you are actually giving your money back to the bookie. That is why one should be able to understand and control themselves wisely in such situations.