The smartphone market is in its infancy
From the comments you'd think that the market for smartphones was mature but the iPhone was only released 4 years ago and Android has come from virtually nothing in 2009 to over 30% now.
This is clearly a market in its infancy and one that Nokia screwed up because it could not get the software right and clearly wasn’t going to any time soon.
There are clearly risks in dumping Symbian and going for WP7 but Microsoft has committed billions to making it work and Window Phone 7 is not Windows Mobile with a UI facelift, it is a new platform.
I’ve been an iPhone fanboy since 2007 but a Windows developer for 30 years so the chance to write apps for WP7 was of particular interest and have recently had my first app published. There are thousands of professional developers like me who are going to create apps – the developer community for Microsoft is incredibly strong and vibrant.
I’m also interested in Windows 8 and am fully expecting a good level of compatibility between the two, push compatibility onto the Xbox as well and hopefully Microsoft will make this a serious 3 way race.
Interesting times....