Sadly a gambling addict doesn't understand what's self control and discipline, he will try to gamble as long as he have money and will try anything to get money. If every gambler understand about self control and read every warning message on the casino, there will be no gambling addict.
I think they're born to become gambling addict that used to make the casino's owner become rich, make a debt collector to work etc.
No one is born a gambler with bad reputation or gambling addicts, they all learn it at the course of their relationship with other people around them and the kind if environment they were subjected to, to me it's a decision we all would have been in the same condition but made the right choice of not being addicted, those that are addicted to gambling does not see anything bad in what they do, they see it as normal way of a gambler kind of lifestyle until they begin to see the consequences unfavourable to the before taking note of what they are doing, so no one is born with addiction, we acquire it through divers means, we can decide not to allow such anymore.
Yes, one is usually born with addiction not gambling addict friends and environment but in case of addiction it usually depends on the person if he can keep himself under control then it is possible to stop the addiction. There are many gamblers who suffer from adverse conditions, but the addiction to winning is exacerbated by gambling. Many people suffer from family turmoil due to gambling addiction. People do not become addicted to gambling only to gain financially it is also a type of mental illness.