Nokia's way behind the in the smartphone industry unfortunately.
Bit to early to say that. We'll know come end of October what they have in store for us. Clearly, things havent been optimal for them lately, but given their historical ability to push out quality devices it shouldnt have to remain that way.
With Nokia pushing out wp7 devices on several price points, and marketing of the platform (and its vendors) kicking it up a notch (or ten), the trade-off of going Wp7 (in terms of app shortage etc.) is probably gonna decrease quite rapidly too.