Zune and Network effects

Zune owners have a familiar story, there are not enough zunes around to use Wi-Fi to share music.

What would be really interesting is if Apple adds Wi-Fi to iPod and both Apple and Microsoft allow to share music across networks which can lead to some awesome discoveries (but at the same time it would be one long horrendous nightmare for the music industry). On the other hand, what would be terrible is if apple adds Wi-Fi and iPod and Zune dont talk to each other !! That would be like owning a phone but cannot make calls to 70% of the world (or <1%>