Although it seems that so far we would say about greed, because they continue to bet when they have a little win. But the truth is, there are still many gamblers who succeed when continuing to bet and maybe, it's not just about the target profit or winnings, but it can also be about still feeling a good moment to continue betting.
that's what gamblers really feel. we all feel the momentum that makes us feel good luck. and that makes us not finish with some small wins. even those who make a target win I think can also avoid their target and decide to continue playing when getting a good momentum to win bigger.
although greed is something that gamblers avoid. but I believe gamblers don't really avoid it. gambling always gives us a feeling to continue playing.