The death knell of MS's mobile ambitions came when the iPhone was released mid 2007. Windows Phone 7 launched end of 2010 as an unholy abomination based on Wind

The death knell of MS's mobile ambitions came when the iPhone was released mid 2007. Windows Phone 7 launched end of 2010 as an unholy abomination based on Windows CE and a Zune-based interface, which created a whole generation of phones that would be unsupported by the NT-based Windows Phone 8 (released 2 years later), which is what they should've released in the first place.