I doubt it that winning adds to gambling addiction, it is only losing that makes gamblers get addicted to gambling because they keep chasing losses and thereby playing over over again trying to win back what they have lost. I'm a gambler to an extent though and I can gladly say that I'm not an addict because I don't chase losses, and of course discipline and self control are involved in my gambling journey, for any gambler it is very important to check your confidence level and ask yourself questions about the way you gamble and always apply self control while gambling. Gambling addiction is very much inevitable if only you can frequently ask yourself questions about your gambling habits because I have come to understand that greed is the only thing that gets us addicted to gambling in a bad way faster.
Watch confessions of addicted gamblers on YouTube and you will find out that it was a big win at the beginning of their gambling practice that became the reason for their entire disastrous path.
Very often many of them use an expression like "It would have been better if I hadn't won then, and then I would have become disillusioned with gambling and would have simply quit instead of continuing to play."
I think this is how many people quit gambling, disappointed that they didn't win anything. And those who did win begin to feel a constant hope of winning again.