~snip~
Casinos are business centers, casinos run smoothly because of the revenue they generate for the operational cost, and this revenue comes from the gambler's losses, anytime a player wins against the house it means the casino is losing, but anytime the players lose the casino make profits, so the house edge mechanism is designed to protect the interest and ever winning advantage of the casinos over the players.
There is no way a player can become rich through gambling unless by chance or a jackpot/lottery, aside from that, as long as you keep playing, you will lose to the house.
Yes, except for the very lucky few ones that actually win big, let's say a big jackpot.
Those people actually might be in a position in which they have won more money than what they have put in the casino.
But of course the casino is usually quick to invite them for free drinks and snacks, to keep them gambling until they lose it all again.
Even on Jackpot it's still not that easy because there are lots of people who also bought the lottery ticket, but then how are they sure they would hit the jackpot? It all lies by luck, and if we are not lucky enough would still end up losing to the casino and the more we lose the more they profits from the gamblers.
So, there are people who are always lucky enough to gamble the first time and make huge winnings after which they leave, I think this sets of people are fortunate gamblers solely seeking for just single opportunity to win and leave the gambling sites.