As far as Ramanujan, it's not arguable either that if he had been recognized early and given proper opportunities, he would have been even more prolific and have made even greater contributions. It took him 10 years for his genius to be recognized locally! And that was as a Brahmin to an urban family, imagine how hard it would have been if he was a Vaishiya born to farmers - he might have never been recognized, and we would have lost his contributions.
If you believe that without being 100% self-made you're crap, that's your point of view, not mine.
As for your edit, extreme intelligence is not really correlated to income. In fact, once you leave the median by a standard deviation, there is almost no impact anymore, and even less when you start controlling for social factors. What is moreso correlated is low intelligence and low income. Descendance is a much, much stronger impact.