I would still differentiate between a successful player and a lucky one. Luck tends to run out and rarely lasts very long. Usually these are small moments. I would call a successful player a professional who has a clear strategy that allows him to have income over the long term. Of course, luck as an element of this can also affect success, but it is not of paramount importance.
I would call a successful player partially dependent, because success is achieved by working on oneself for a long time, and a professional will not be able to achieve this success if he does not experience passion and interest in the game. Therefore, I would call it a controlled dependence, when it is necessary the switch turns on, and when it is not necessary it turns off, if you understand what I mean.
I don't think that people who are successful in gambling rely on new skills to win. I still consider luck to be an essential factor. I agree that he has a very good skill strategy. He controls himself in gambling.
We cannot call successful people addicts, because sometimes he only plays a few games and he wins big in gambling. Only those who are successful and continuously gamble uncontrollably are considered addicted. But success also makes people forget that he was also addicted to gambling.