The intelligence of Gambler will play an important role in this situation because the limitation was known by the investor then he will be successful at the end otherwise he will not get the success till he he knows his the proper investment limitation on gambling.
of course the most important thing for you not to bankrupt is to limit your gambling game, gambling is tricky, you can just get out of control, but the amount limitation can save you. gambling is not future failure if you know how to manage it..
Every gambler should know, otherwise they will lose more and gambling instead of bringing fun, it will bring misery in their life.
In general, gambling is risky, therefore every gambler has to understand the risk in order to manage it properly, and limiting the amount you risk, is just part of minimizing the risk in gambling.
Judging that way to gamblers isn't justifiable mate, we have no right to conclude what's their future. Everything which may arise to their lives always depends on what their did is. Risk in every aspect is always present in most common scenario, so even though you thought a misery would be an outcome of mismanagement on gambling, a person's joy is unmeasurable.
I just give an advise despite of giving judgement for those gamblers who happen to have bad experience. Always count on your funds, and don't take full decisions right away because it's not always a certain target when we're involved in gambling. If you want the future to become brighter, then secure your safezone and think of your welfare.