So people will only have a choice between Apple and Google? WTF?
Perhaps less Apple users will make the switch. I can understand that such people have been exposed and affected by the Distortion Field.
As for Android users, I can see a lot of people switching:-
To the everyday consumer, there is no brand coherence and near zero brand recognition. You may have this with the phone manufacturer, e.g. HTC, which may create some form of brand loyalty, but as HTC will also sell WP7 the possibility is that the user will stick with HTC, but not the platform.
To the techie, well I can see a number of reasons why this type of individual may make the transition from Android to WP7:- Fragmentation caused by an Open system whereby manufacturers add bloatware to differentiate (but also affects performance) and also staggered, non unified updates.
WP7 also has some exclusive features that could tempt the dissatisfied:- Integrated XBox Live, Zune and MS Office. A unique and user-centric UI.
I don't understand why people don't want competition - you should be applauding MS for coming up with a decent effort to compete with iOS and Android.