Quite possible. David Walsh (of Tasmania's MoMA) had a similar betting system to make his fortune. A story/warning he told to a hedge fund conference was that h

Quite possible. David Walsh (of Tasmania's MoMA) had a similar betting system to make his fortune. A story/warning he told to a hedge fund conference was that he _did_ think his system was infallible/bound to win, but revisiting the calculations later it turned out the expected value would be failure - he just happened to win at the right moments, initially. (Australian Financial Review article from a couple of years ago)