This only happens to people who are so desperate to make money without really working for it and such spirit is not good because at the end of the day if you invest all your money and the result turn negative the result will not be different from what we saw in the article you submitted above.
If people don't work in any of job and only depends on gambling, that will be difficult for him, and it could only make him lose in many times. As we know that gambling is an activity to having fun, we need to treat gambling as its what should be.
He needs to have the power to control his mind in gambling because whatever what is the result, his chance to lose his mind and his money will be there. Besides that, if he decides to invest all of his money without having strong control of himself, he can not have survived in a long time.
Sometimes I find it really hard to believe that there are people like this out there even when I read such stories. Like how can a man depend on gambling without having any other side hustle considering the very uncertain nature of gambling and a game that can be so unpredictable.
I want to believe that most of the shared stories are mere fictional and not real because if its real, I would say that there is something wrong with the player because gambling is a game of entertainment, meant to relieve stress and its not expected for such a game to cause any one stress or tension, gamblers who indulge in the act of desperately looking for money in gambling might need to seek medical help.
I think you are still very new to gambling if you havent met this type of gamblers. They are everywhere and they are known as compulsive gamblers. I see them daily and it can really be strange but then I feel they are just been aggressive about it.
Its not bad to gamble for money, this is what I do, and I have to be honest to myself but then, not having any other source of income is what I find irresponsible. Like you mentioned, too many uncertainties with gambling and its not something one can trust to provide daily living, so something like that should never be seen as a major source of income.