Some minor nitpicks
> Xerox invented the GUI
Not really either. Engelbart has show mice and windows before the PARC folks. I remember people dragging stuff with light-pens on IBM's 2250's and other similar GUI-like behavior on high-end CAD and image manipulation software. Was the Star close to what Apple offered? Yes. Was Star clunky in comparison? Yes. It was also 3 times more expensive. I think the single most meaningful innovation in Lisa was the mouse drag actions and the clipboard metaphor. They made a convenient bridge between physical and virtual objects that took windows & icons one step further.
> The early web was a fairly incremental step from Gopher
It reminds me more of local-based hypertext and SGML. From that to HTTP, it's a very easy jump.
> Apple didn't even produce the first touch-screen phone.
Indeed. I owned a Sony Ericsson P-800. It was multi-tasking, had a huge touchscreen and, when I first saw the iPhone, I felt it was very "meh". Nice animation, beautiful icons but I had a more functional phone. And the honor of the first touch-screen smartphone belongs to the IBM/BellSouth's Simon. Unless you count Esslinger's concepts (they show a touchscreen desktop phone that predated the Simon).
And yes. I agree that Apple's most revolutionary product was the Apple II, but it must share the spotlight with Commodore, Atari and Radio Shack. The Apple II is (or, at least, should be) a source of inspiration for engineers: it's simple, small, concise and incredibly rich in functionality.
> there hasn't been anything that Google's done thusfar that I'd nominate for being society changing
An open-source post-PC OS seems quite impressive. Helping move data into web apps, dooming local storag, too.