Yeah, your are correct with your findings. With such cash made i don't think that illiterate multi billionaire will remain illiterate. He will surely utilize such kind of wealth on more prominent things acquire whatever he wishes for.It's already happening, all you need to do is to get to some African countries and see wonders. There are many illiterate multi billionaires who are not know globally but are just making waves with their locality. The truth of the matter is that with the amount of money, such a person won't remain illiterate for long because there is enough money to acquire whatever he needs to. It's just about upgrading oneself with money.