Google Phil Ivey Crockfords. This case isn't that bad because the casino let them have the winnings. Ivey didn't get his winnings, sued them and still lost because the court concluded he was "dishonest". Iirc, all that happened was that there was an imperfection in how certain cards were printed, and Ivey was a stooge for a Chinese woman (Ivey is a poker player who is known to gamble huge) who had worked out this edge.

The same is also true with sports betting in the UK. Because sportsbooks are so bad at managing risk in the UK, they will shut down winning accounts (unlike in Asia where the huge books actually winning accounts to improve their line and make more money) and use the whole range of AML/consumer protection rules to tilt the odds in their favour.

The reality is that casinos can't beat that minority of customers that are smarter than them...so they cheat.