But let's assume 10% of the players do get greedy and try to win back everything and fail, then that means the casino will be in profits from those 10%. Of course we can assume as well that there would be players the profit from the casino, but theoretically it would still be hard to defeat the casino with the limits in place.
Then, in this case, you are assuming that the variance is in the casino's favor. Expected value changes not based on the bet limits, nor the strategy. You are
assuming that the casino has profited off players to prove that the casino is profitable. That is begging the question and is invalid.
Expected value is absolute.