If IP WiFi buildout is nominally nominal in cost, then the programming base for this type of radio service is of value, and the current subscriber base can just live off the (decaying) sattelite coverage or upgrade their radio receiver.
You can certaily argue that they pay too much for content, but then, all the new business model's do.
And, if they go WiFi, there's a shot at the mobile phone market as well. Not to mention laptops, handhelds, ... toasters.
Guess I'm just saying - I can't easily tell how this will work out, so I don't see any compelling thing to go long / short about.
Interesting entertainment, I guess ...
rr