Granted, but I'm not suggesting that they start trying to compete with Windows 7 - merely that if someone wants to buy the OS and install it on their own kit, then they should be able to do so. On the other hand, it's on the understanding that the resulting combo doesn't have to be supported by Apple. Let's be honest, there's precious little difference between the 'oily bits' in a Mac and a PC these days. You never know, you might end up with a system that runs MacOS better than a real Mac! (And yes, I know theoretically you can buy MacOS and bung the Apple sticker from an iPod onto your PC and be compliant with the letter of the MacOS license - but it still strikes me as dodgy)
Getting back to the phones, if Apple were to license iOS to others - say Samsung - then I would assume that they'd be able to dictate things such as minimum hardware specs. Maybe I'm being simple minded, but surely the more devices that are running the OS the better? Personally, I'd be fascinated to see what kind of iOS phone another manufacturer could deliver or, and I realise this is heresy to some, whether another manufacturer could deliver a better iOS tablet than iPad2?