As pointed out the Zune lives on but I think it'd be difficult to argue it really made a substantive splash in the market despite arguably being a superior devi

As pointed out the Zune lives on but I think it'd be difficult to argue it really made a substantive splash in the market despite arguably being a superior device as well as having the (imho) very strong Zune Pass subscription service. We're four years in and I can count on one hand how many people I've known that owned a Zune. There are parallels with WP7 launch but the stakes are much higher this time around because the relevance of the desktop is waning for general consumer use and Microsoft needs something to replace it. WP7 is an inflection point, if it fails I think you'll see Microsoft go roughly down the same path IBM has as far as consumer relevance (unless perhaps they turn Xbox Live into a OnLive-esque games as service thing, which they are in a better position than Sony or Nintendo to do).