>Such playing-with-computers is something that was confined to the somewhat richer and educated people in American society, which the african-americans were not, 15 years ago.

That explains the "many african-americans and many women were not doing the steps needed to be talented enough to be able to make it big now" part of your sentence. It does not explain the "the most likely reason they did not do that, is probably because it just did not occur to them" part of your sentence. Hence the request from raganwald and myself for a source to back this up.