Maybe I would say that you are discussing two types of gamblers here, where the first is those gamblers who have entered a cycle of addiction so that it is always difficult for them to stop in any situation, win or lose. And the second is the gamblers who from the beginning have understood what and how gambling really is so that they know what to do in every situation such as stopping at the right time, especially taking a break when experiencing defeat.
I think we can judge which is better of the two types of gamblers, and clearly the second is much more recommended, or what is meant is being a gambler who understands in general what gambling is and how winning and losing work is something that is more recommended for a gambler to have, because only by having this proper understanding will we avoid various significant negative impacts.
In fact, with gambling, everything is almost the same as with trading, where a small percentage of players remain with a profit, different sources claim differently, on average from 3 to 5%, in fact, this is not much. But I think that there are significantly fewer professional gamblers than traders, and I think that players risk less money than traders, because the risks are also different.
In your example, both the first and second should understand the danger that is in gambling, if their goal was to double the deposit and withdraw the profit, and in the end the player only gets losses, then it seems to me that with proper risk management it is difficult to get addicted, most likely the player will simply stop playing, when he will lose part of his deposit. There is no point in continuing if instead of doubling, he received a significant reduction.