Microsoft has always been good at extortion. That's why they dominated the PC industry for years, and small companies like Be, Inc failed. But this time they fell behind and have to resort to more subtle forms of extortion ("incentives") to try to dominate again. It's really pathetic how they do that.
Don't get me wrong, I like Windows Phone 7. Haven't tried out 7.5 Mango yet, but 7 was really nice and stable. A first for me in all my dealings with Microsoft over the years. I've had Windows Mobile phones in the past that needed to be thrown under a car tire on more than one occasion, lol.