Obviously there are exceptions to this rule. People have beat the casino. I’ve seen it happen. There are plenty of people who won giant jackpots. However, that doesn’t mean it is possible for everyone. A lot of people have to lose to the casino for one person to win. Don’t fool yourself into thinking you will be the one.
I think when we are talking about beating the casino in this context it means being profitable in the long run... it's possible to win out of luck one or two times, you witnessed people hitting the jackpot, this is very normal but It rarely happens...The problem with this is that you can't win constantly if you are a regular player, the people you witnessed winning huge amounts are bound to lose more than that if they continue gambling that's just how the game works
Ironically, the gambling floor of brick-and-mortar casinos are well equiped with cameras on the ceiling, in order to keep an eye on gamblers. Those who seem to be extremely lucky and beating the casinos in a consistent way immediately catch the attention of the cameras and the staff within the control room, prompting them to investigate from the distance whether such gambler is cheating the game somehow, in the end, it always ends up the same: with security escorting out those consistent winner out the gambling floor and the casino facilities.
One think is having a random gambler to hit the jackpot once a year or something, but it is a completely different thing to have a gamble to defeat the house on blackjack over a dozen of times in a row.