All it needs is some sexy hardware (this device) and marketing. It will sell. It won't touch or overtake Apple and Google overnight, but it will get there.
Why will it get there? I'm not saying it wont but I don't see why/how MS will manage to pull back a large market share? People are more likely to buy what they've had before, so apart from the small numbers (proportionally) that change they're all fighting over new buyers into the smartphone market, but because they're last to market (really, really, last) their advertising has to counter the social advertising of friends and family who already have smartphones, because chances are those friends and family have an iphone or android handset.
