Not usual but it can happen, 40 red losing streaks are something that you can't imagine happening if you are the one who's playing, those who are using martingale system who hopes that they can recover their losses after winning their next bet would be empty if that long losing streak take place.
That's why the Martingale strategy requires big money when you really face a losing streak of more than 20x, let alone having to lose 40x in a row, that's definitely a big loss and drains all of our money, that's why I never really believe in dice or casino games others are called "Probably Fair", but again it's up to the gamblers how they stop playing before the dealer drains your money.
Martingale strategy with big bankroll will make your gambling experience worst if ever you ever a losing streak like that or more because you are increasing your base bet exponentially. Thinking how terribe it can be on Martingale strategy makes my spine tingle. Assuming you invest your life savings on your bankroll just to have a room for long lose streak and then this kind of catastrophe hits you hard that wipe your money without you being notice it.
This is the important thing I learned on playing gambling. Just use bankroll that you can afford to lose since this kind of long lose streak can hit anytime since we are always exposed to risk the longer we play.
That's how casino counter the martingale strategy. Most of the bankroll won't keep up if they experience 20x losing streak. You need to have a ridiculous amount of capital to keep up with a very small base bet if you experience that kind of losing streak. This is why I don't do martingale only strategy on a casino since I've lost so much money just by doing it. It's an effective strategy but the risk of it will certainly drain all your bank rolls. I suggest to just use different strategies when you are doing a gambling session or mix some strategies.