Didn't Microsoft already sell their mobile handset operating systems over the years to other well-established smartphone makers like Palm (like their Treo Windows phones), HP/Compaq (i.e.Jornada/iPAQ), UTStarcom (Thera/PPC), HTC (HTC7 series), and LG and Samsung. At one point they even made their own short-lived handsets a couple of years ago, Microsoft's own Kin! To say MS isn't already established, given they've had all this time, even in hardware manufacturing, seems a little funny to me. I'm not sure how much more well-established they need to be when Apple, Google and even Symbian took off comparatively faster than Microsoft's foray into mobile. FAR faster.