The problem with the Martingale system is that it gives you the illusion that you will win barring some ridiculously unlucky freak losing streak.
The reality is that it keeps you in the game until that ridiculously unlucky freak losing streak occurs.
You could, and I have witnessed it before, Martingale years away making steady profit - building this illusion until that one fateful ridiculously unlucky freak losing streak happens and all your winnings are gone. The blink of an eye, it’s all gone and instead of contemplating the fact that the system is the absolute best system as far as the casino is concerned, the casinos would love for everyone to Martingale, it’s easier to contemplate that the casino fixed the outcome to end your streak.