Re: I disagree.
"Windows Mobile - from 7.5/7.6 on......"
By which time it was far too late. I had a Windows phone even before Apple launched the iPhone and it sucked big time. Infighting within Microsoft meant that all innovation was stifled. The all-powerful Windows team wanted Windows everywhere, including places that it didn't belong - like on phones. It was years before Microsoft could address these issues and actually produce a decent phone OS. By then, they'd already lost.