A couple of notes from my own experience in casino hacking fun:
1. if they spot you singularly winning way too hard, they will cut you off 2. if you can distribute the wins wide enough between enough individuals you might get away with it
There ARE exploits and you can get away with them. People find them pretty regularly and the ones who get away with it are really organized.
My favorites over the past years: Weak PRNG in the Buffalo slot machines [1], and people cleaning that, and the guy who figured out an exploit in the game king brand video poker machines [2] - One got away with it and the other didn't, it's worth being aware of how.
[1] https://www.wired.com/2017/02/russians-engineer-brilliant-sl...