Speaking as one of the many morons, I can assure that Windows started out as fairly user hostile. Apple was far more user-friendly, so Gates had his guys switch to some of Apple's basic ideas. In any case, as a novice back in 1995 I spent two months trying to master word and excel and almost got to the point of adequacy. Not so, powerpoint with all its intricacies.
What Gates was great at was the whole notion of making people pay for software, which then led to its virtual universality. Now even Apple products can accommodate microsoft.