If you win big in gambling, it can really fixed your life possibly but rather than making to fixed their life, those high earners still will do gambling resulting in wrecking the life output. Well this is really a common situation.
Yeah correct stopping after winning is not possible for many, those who stop enjoy their profit. (if i remember correctly a user on pd made 300 btc profit but he didn't stop he kept pushing his luck now his profit is around 160 btc.)
some people who bet all their money all in win and never come back to gambling, of course it happens rarely but we cant say that it doesnt happen at all..