c'mon, man. you know microsoft can't do that. they're MICROSOFT. even if this were the best technical choice to make, they would never do it. the negative publicity would kill them.

the problem they are solving is that windows, as it currently exists, is dragging around 20 years of cruft. the weight of all that cruft is slowly strangling microsoft to death. they can do it now, or they can do it later, but sooner or later, windows will have to be scrapped and replaced with something else altogether.

look what a great move it was for apple. painful in the short-term, big win in the long-term.