I'm wondering if the part about Apple not letting customers have access to media that was purchased outside the App Store (e.g. Kindle books) is just an off-the

I'm wondering if the part about Apple not letting customers have access to media that was purchased outside the App Store (e.g. Kindle books) is just an off-the-cuff remark made by some Sony executive who was mad about Apple not letting them do their own in-app purchases. Seems odd, considering Amazon has been doing it this whole time with seemingly no protest from Apple.