~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.
Big jackpot in the sense that it can change a gambler's life and also if for example at that time they can really stop completely and no longer engage in gambling, but yes as we know that gamblers like that are only a minority, because most of them cannot ignore the various temptations that come after they have managed to win that big jackpot and then return to play which in the long term the casino will take back their winnings the previous day.
In most cases, yes, usually the casino can always invite gamblers who previously won to return to play, the casino has a thousand ways to make gamblers who initially won but eventually lost and lost all their winnings, or even lost all their savings in their lives, that's why I said above that gamblers like that are only a minority.