Look, in order to understand what Jobs did, you have to bear in mind where he started. He started at the very cusp of the personal computer revolution, back at a time when you couldn't even really buy a computer -- although if you were extremely geeky, you could buy a kit and solder one together yourself. Jobs helped Woz market a computer that was remarkably innovative for its time, yet required comparatively little expertise on the part of the owner.
That early success, in turn, allowed them to turn around and release the Apple II, one of the first PCs accessible (both technically and economically) to schools and middle-class families, and one of the first PCs to convince large companies like IBM that there was a market there at all. Jobs isn't the reason that we have personal computers, but a convincing case could be made that without him, it might have taken several more years to get where we are today.
Apple didn't invent the GUI, either -- but Jobs had the foresight to realize its incredible potential, and he had the force of will to direct Apple to release the first truly accessible GUI-centric computer.
NeXT didn't invent Unix, but it made Unix vastly more usable and useful, and in its current incarnation -- OS X -- it is now not only user-friendly (a feat in itself) it is arguably *the* most user-friendly OS, on both desktop and mobile devices.
PIxar didn't invent computer animation, but Jobs took the company when it was floundering and pushed it forward, ultimately demonstrating the viability of computer animated films and advancing the development of that entire industry.
Apple didn't invent the MP3 player, or even the hard-drive based MP3 player, but Jobs saw how seamlessly a person's MP3 player (and digital devices in general) could be integrated with a their PC and with the internet.
Apple didn't invent the online music store, but they created the first one that had a lot of titles available DRM-free.
Apple didn't invent the smartphone, but how many people did you know who had one before the iPhone?
Apple didn't invent the tablet -- although they arguably did a lot of work in that field years earlier, with the Newton -- but again, they popularized it. It's still a little early to say how that one's going to shake out, but it looks like it has a lot of positive implications for industries that traditionally relied on print.
In all those cases, Jobs and his organizations placed a premium on engineering, usability, and industrial design. It was clearly something he sincerely valued. Not everyone can afford to buy his products, that's true, but his products forced the competition to respond. He dragged multiple industries forward in his wake. He didn't give us anything we didn't have or couldn't have had. He wasn't a great humanitarian. And, to be honest, I feel kind of weird about praising him as much as I have here, because I have very little patience for people who use their authority to treat to their underlings poorly. But despite all of that, the fact remains that we're probably about ten years further along than we would have been without him.
Take any one of those items on its own, and sure, its just a "product." Take it all together, though, and there is a very clear theme which emerges. Jobs was an asshole, absolutely. But he was also a man who had a vision of ubiquitous, powerful, accessible technology that people could easily use to improve their lives. I'm sorry, but that's the way forward. It *has* to be. We have so dominated the planet with technology, so completely intertwined it with our species' fate, that we *have* to humanize it, have to make it sane and understandable and, where possible, fun. If our technology is going to empower us, we have to bring it up (and in some cases, down) to our level. Jobs got that.