Right now in the Apple developer community, there is significant angst regarding Apple’s mandatory 30% In-App Purchase fee for subscriptions. On one side is “Apple can do whatever they want because it is their store” and on the other is “I don’t want to lose access to apps I have already purchased and use”.
I believe that Apple will dance on the line by finding a significant new source of revenue through content publishers while still allowing Software as a Service (SaaS) apps to live. Paying a toll to Apple to use Dropbox would stink.
Ben Brooks makes a good point in this response:
Again, we all need to take two steps back, a deep breath, and wait to see how this plays out in June — when supposedly it is do or die time for current apps violating these rules.