I love the balance remark you mentioned, but one can have that balance only if they are fully prepared for gambling. This is only possible when they have the right gambling system, budget/management and psychology prior to starting gambling in the first place, and these qualities/know-how will be the guide of the gambler to know when to gamble and when not gamble, unlike the way people make it looks like a compulsion to have a stop at a certain point. The issue with most gamblers is that they gamble anyhow, that's why the results are also anyhow, and more reason why a random person can issue random advice, but I do not buy such an idea.
Indeed, if you prepared yourself before entering it helps to keep that focus, most of the time organize gambler is the one who can perfectly practice such kind actions, those who already got a huge experienced and manage to control every emotions that might be triggered along the way, not an easy task but doable, as wise gambler knows the right timing to stop of push for more.
See, I am not a fan of telling a gambler not to gamble more to avoid more losses, what if the gambler would win his Jackpot in the next gamble? No one can tell this, we are just assuming and trying our luck. As much as no one can know the time to lose as well, no one can know the time to win too, but people like to instil fear in gamblers which I do not like.
No one can tell that, if luck permits then it will happen, and for sure no one can predict the next outcome of your bet, so on that situation it's the persons decision and no one should influence them to whatever they wanted to do.
My advice is that gamblers should continue to gamble as they like but have a viable plan and management towards it, which of course will enforce responsible gambling rather than following random advice.
Being responsible helps a lot, a good factor and practice that you should have to avoid losing more money and become addicted.