"Hey, did you get that new [game/app] from the Windows app store!!!???"
That's because that's not the point of Windows Phones. Sure, you can get 90% of the "apps" out there for the phone, but it's very clear that the point of Windows Phone is to be a seamless connection to Exchange servers. The integration of Exchange/Outlook is really unmatched in the mobile market, and for people (like myself) who spend most of my work life in Outlook/Exchange, it's really useful. I don't miss the 90,000 fart "apps" available on the other two platforms.