Sure man, gamble isn't a place to make or generate a wealth because it's a luck based thing. One might be lucky to win huge money from gamble but he shouldn't get over exited to keep on gambling because he's believing that its going to give him more. However, IMO when gamble is played for profits the gambler hardly win but if the gambler plays for entertainment he might win easily. Although gamble is a lose lose lose and a single win thing, unless the gambler is extremely lucky before he could get a win win win lose from gamble and it's not all the time the gambler win his bet.
It's really a bad attitude to keep on gambling continuously even after winning some good amount of money that was enough to retire them for that day but yet, they will continue to gamble until they lose all the money again. Some persons believed that such attitude is a symptom of addiction and that's actually true.