It may not be as bad as I feared, assuming the Steve Jobs' email is legit.
Steve Jobs Says Apple Subscriptions Are Only for Publishers | News & Opinion | PCMag.com
""We created subscriptions for publishing apps, not SaaS [Software as a Service] apps," Jobs said an email sent in response to a developer, obtained by MacRumors."
Netflix and Pandora are SaaS providers. At least by most peoples' definitions.
Something doesn't add up here though. Sony isn't a book publisher either are they? They simply sell e-books from other publishers the same as Pandora plays music from other music publishers. Amazon isn't a publisher of books either.
I think there are two issue here, one is the publishing issue and the other issue is selling content outside of the app store. Just because a company is not a publisher does not mean Apple is going to allow for sales outside of the App Store without requiring the same sale be offered in-app. Sony didn't get rejected over publishing issues, they got rejected for directing sales to outside of the app store framework.