I have a feeling that the game script is created with the code to adjust to the players' strategy. We can also observe this thing happen on Dice. After using the strategy again and again, it will somehow stop functioning after some time.
There's really a code and algorithm for that.
The casinos won't allow us to win continually if they've detected that we're using some pattern or strategy against the games that we're playing on them.
That's why no strategy would work for long if you've been winning on it lately.