They will only realize the bad side of it when they're no longer winning and they're spending too much already.
There come a lot of realization at the end and it's true that it will be their choice that they need to do if it's gonna be worth it for them to do more or force themselves to control it.
This is normal reaction if you don’t gamble what you can afford since every lose will counts and will turn into giant disappointment once player sum all their losses.
But if you play responsibly, even if you keep losing you will not view gambling all negatively because you knew winning days will come soon since gambling is just almost balance between losing and winning if we will just have fun.
I doubt the way you play will influence if winning will come sooner or later, in fact in my opinion and from what I have seen from different people and type of gamblers I have noticed a similar pattern, usually the win comes first to those playing with a much fatter balance than those playing with a slim balance. Now in here I am talking about the max win or a huge win and these usually do not happen to people playing with minimum bet like I used to do for a lot of years and I still have never seen MAX WIN on my screen despite playing from so many years. That must be the reason, the low bet as I also have seen a lot of time the people playing with a big bet are getting the max win, I don't know now, maybe because they have lost a lot before or the game has just been programmed this way, it is just the way it is. So for me gambling has no good to people playing what they cannot afford to lose and also playing with a low bet.