PC manufacturers wont take your kool-aid of an OS and keep using what was tried and tre, even in the PC world.
I guess this should force microsoft to build a better system, and fast. If history is any indication, it could be another 3 – 4 years for another microsoft OS attempt. Apple will have had 4 or 5 OS releases since the original XP, and Linux will have had time to convince the mainstream that Ubuntu is a great Windows alternative.