Why does one have to invent something to get credit for being great?
Great painters did not invent painting. Great architects did not invent architecture. Great baseball players did not invent baseball.
They took existing thing and made them better than anyone before them ever has and, perhaps, better than anyone who follows them ever will.
Under Steve Jobs, Apple took things or ideas that existed and turned them into must-have items like no one has ever done before.
Jobs was the Picasso, Frank Lloyd Wright and Babe Ruth of the tech industry. It is like someone would say, "Ruth was a great hitter, but he did not invent the home run, so why all the fuss?"
MotionMan