If you watch any of Jobs' historical launches, speeches, press events, etc., you will hear him say this over and over:
He wants Apple to design their products starting from the consumer's perspective. What is it that the consumer wants?
The fast majority of companies work from the other direction: they start with a cool technology and figure out how to market it. Engineers don't know what consumers want. All they think is that the tech will sell itself.
So it doesn't matter that Jobs/Apple didn't invent the mouse, the computer, the mp3 player, the smartphone, tablet, capacitive touch, etc. What matters is they abstracted the technology and focused on the user experience.
That is Jobs' legacy. Most people around here attribute Apple's success to rabid fanboyism. To some extent, that's correct. But how did they earn such a loyal following? Why can't other companies attract rabid fanboys? Why is it that so many people use Windows and gripe about it, while so many people use iPhones and love it to death? Why do Pixar movies earn such acclaim? It's always the same philosophy. It's not about the technology: the quality of the rendering, the 3D, etc. It's about the human aspect - the good story that people of all ages can relate to.
Jobs' contribution is allowing the masses be introduced to very technically sophisticated machines and allow them to enjoy and benefit from that technology. It was never about being the first to anything. To think otherwise is to completely misunderstand why Apple has been so successful under Jobs' supervision.