You are asking if anyone have the capacity of infinite funds? 
Martingale is not a strategy, it is a stupid hack that is disguised as a strategy and it does not work. If it worked, casinos would be bankrupt by now. People need to stop believing in fairy tales, there is no winning strategy and there can never be one.
There’s no infinite cash but a billionaire like Bezos can beat the casino bankroll if he will do a martingale strategy continuously. Martingale is not a strategy, it is a stupid hack that is disguised as a strategy and it does not work. If it worked, casinos would be bankrupt by now. People need to stop believing in fairy tales, there is no winning strategy and there can never be one. This is the reason why casino has bet limit on their game so that no one can beat their bankroll no matter how high roller you are. But if we remove those limits and assuming that casino games is fair, I think Billionaire can beat a casino with low bankroll.
No one can beat since billionaire don’t gamble in a casino.