WebRTC is a huge one that comes to mind. With the App Store and Facetime in the same wheelhouse, there's no compelling reason to develop this area for Apple. It

WebRTC is a huge one that comes to mind. With the App Store and Facetime in the same wheelhouse, there's no compelling reason to develop this area for Apple. It would be a HUGE win for the general web if they did, but there's zero reason for them to pursue it.