"So Intel lobbied heavily to get us to stay with them … [but] we went with IBM and Motorola with the PowerPC. And that was a terrible decision in hindsight. If we could have worked with Intel, we would have gotten onto a more commoditized component platform for Apple, which would have made a huge difference for Apple during the 1990s. So we totally missed the boat." - John Sculley
"The End of x86?" Really? I think a few x86 processors are being used in some servers somewhere too. Or really in any computer that isn't meant to be carried.
True, there are similar (slower core, lower power) alternatives in the server market (Sun SPARC CMT systesms come to mind), but you didn't mention any of those and they don't have a significant foothold.