For me i dont think so its the main reason because addiction is a result of excessive gambling, when you dont have control already and cannot stop the activity. In the beginning it is just a trial and fun but in the long run it will push you to keep doing until you reach to addiction, others just makes an excuse and believe its because of loneliness, but for me it is a choice at first.
I think gambling addiction is the set of mind who has an extreme and eagerness to earn money and bring big profit for there family. It can be a good form of relaxation or fun and stress reliever. In my own self, I do gambling for money, to win and have income, because I'm not lonely nor unsatisfied.