Really? Give me some examples of "legitimate innovation", please. Because I'm really curious as to what you consider innovation? iOS isn't innovative? Pinch-to-zoom, bounce-at-scroll-end, inertial flick scrolling, no keyboard, no-scroll-wheel-no-nav-keys, simple app install-deinstall, tap-and-hold to rearrange, that all existed together in one integrated package? Real innovation only seems "obvious" in hindsight. The best proof is the huge slew of criticisms which came out about the iPhone when it first came out. All the moaning about the shit it was missing or didn't do but absolutely needed.
Before the iPhone, the BlackberryOS was considered the nadir of handheld computing. And Android back then looked a heck of a lot like a Blackberry OS. Now that paradigm considered a backwater. The move to mouse+gui wasn't that natural an extension from keyboard+tty, it was innovation. The move from the Blackberry+Palm+WinCE paradigm to iOS wasn't a "natural extension". It only seems natural in hindsight.