This level of defeatism is the exact reason I got into the markets algo trading.
People like you stay out.
More to the point, just because a genius mathematician and code breaker started a hedge fund it doesn't at all push out any of the little guys. The market is so large he can't possibly be trading all instruments at once, and "scaling" is a problem for huge hedge funds. Especially ones that have to answer to their shareholders. Even though this is a huge fund, it is highly inflexible.
What you're saying is akin to "Google already does email and they're loaded with geniuses, what makes you think you have an edge over that?"