Yes, I have seen addicted gamblers in my environment. These are people who once won a lot of money and spent it, one might say, down the drain. Having squandered everything and even more, the man was sure that he had found the button where he could get pretty easy money. His several attempts led to failure, but the story of a beautiful sum and a beautiful life haunts him to this day. However, there is no cash, and he borrows from friends. Everything turns into a cycle; when he wins, he pays off his debts and loses again.
But I also have the impression that not every person can become addicted to gambling since not everyone has sufficient funds, and there are also people who simply "help" others become addicted by lending money. Even if we exclude self-control when playing, regularly finding money to play is also not an easy task.
Well, that's a very sad situation there, and that is one of the reasons why I always say that some kind of winning can sometimes be a trap, and it takes being very conscious to avoid falling into such a trap.
I also have come across a few persons with exactly same situation as the man you talked about, I think two I know of are lottery winners, who won a lot of money, but squandered it on lavish living, one didn't even have a house even now, he spent all the money paying rent in expensive areas hoping he did never be poor again.
Today, he is so hooked to playing lottery, hoping he could make the same type of winning he did the last time, but the winning is yet to come even after having tried for about two years now.
That makes sense, indeed those who cannot accept defeat will experience excessive pressure from the losses that occur and that can make them go deeper into gambling and make them trapped to the point where they become addicted and find it difficult to get out of it. In fact, things like this can be prevented by our own behavior in gambling, because it is our own behavior that will determine what the outcome will be, if we behave in the wrong way, such as not being able to accept defeat, what can happen is big losses. or addicted to gambling.
Two years is not a short time, with him wanting to win again like what he experienced, I don't think he can get rid of thinking about it so he can bet or play the game for a long time, besides that of course those who only think about winning will experiencing losses in the long term and with people you know, maybe that is one example.