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.
This sounds very strange, do you really believe that a person can be born to eventually become addicted to gambling? Most likely, everything happens the other way around, when a weak-willed person is fond of gambling, he lacks an understanding of what is happening and emotions prevail over common sense. Maybe someone even has this excessive obstinacy, but in the end, a thinking person knows when to stop, but an addict does not understand this.