Yes, this is Apple. See: The In-App Purchase controversy with eBooks and other applications. For example, did demanding the removal of all links to Amazon.com

Yes, this is Apple. See: The In-App Purchase controversy with eBooks and other applications. For example, did demanding the removal of all links to Amazon.com from the Kindle app (because Amazon didn't want to hand their eBook margin to Apple by using Apple's IAP API) make anyone other than Apple better off?