Ah come on, almost their entire ecosystem is closed and now they're slamming extra locks on them as well. Much of their stuff might be reversed engineered or """open""" now (iTunes, iPhone docks, iMessaging, AirPlay) but just about all of it is under their exclusive control. Even well-established protocols as bluetooth have been implemented only partially at best. (Well, at least it was in older iPhones, which wouldn't allow dial-up/PAN networking, couldn't send/receive files etc)

What's more, their devices are locked up as well. Only Apple-approved software can be installed on iOS-devices, and can only be obtained from Apple. You need to pay up to be able to develop for your *own* device. And now they're expanding this scheme to the desktop as well!