Gambling is like a double edge sword and it's consequences depends on how gambler handles this sword.
I would say it doesn’t depend on the gambler. Rather, it depends on the luck of the gambler which side he gets. Gambling cannot always be a key factor in getting into poverty. If you gamble in limit and gamble that amount that you can afford to lose, then you can definitely manage the amount you lose. Now there are some people who gamble blindly; they completely trust in their luck. But as there is no proper planning, hence it might lead to poverty.