I think it would follow the letter of these rules if service-providers made "with iOS" versions of their services available - both on their website and in-app.

I think it would follow the letter of these rules if service-providers made "with iOS" versions of their services available - both on their website and in-app. So Rhapsody could say their service is $10/mo for everybody... except if you want iOS access, in which case you pay $13/mo.