Most people in the cell phone industry said the same thing five years ago.
But, having used both WM5/6 and Symbian, those phones weren't just less slick, they were nightmares to use compared to what we have today. It really was baby software.
Microsoft is betting their future on a redesigned Windows with an unprecedented upgrade price of $39, and just pissed off their hardware vendors by launching their own PC devices.
And you don't think the PC industry is being disrupted?
It will work just like the iPad. GUI elements will stay the same size, only at a much higher resolution. Old apps will "see" a 1440x900 display and just look more blurry.
Do oter manufacturers except Panasonic cover spills?
How is the machine milled MacBooks designed to fail at the first sign of trouble?
The batteries are actually designed to last for many years and pretty easy to replace with a screwdriver.
My MBP from 2008 is still going strong, and that's the less solidly built pre-unibody. Unlike many others, Apple extended the warranty because of the nVidia chipset bug.