Users can purchase Spotify subscriptions through the browser right now. So there goes your entire argument.So you think Amazon’s app is less secure because it doesn’t use Apple’s IAP? What‘s your source for that? Also why should Amazon pay Apple 30% for a book purchase in the Kindle app? The Kindle existed before Apple’s App Store did. Nobody could credibly argue Kindle wouldn’t be successful if not for Apple. But if Apple deserves 30% then why do they not make Amazon offer IAP? Or why don’t they allow every app to be a ‘reader’ app where people purchase additional functionality/remove ads etc. via the browser?