If one "strategy" really work, all casino (online and real) closed for bankrupt.
Martingake "can" work only with infinity funds
As already discussed in other thread, infinite bankroll will only work when you play in a site that has no max win in a single bet. But as we all know, all sites have their maximum win amount. So when you keep on losing and hit the max win amount, you will not able to continue your martingale.