Developers Expect iOS and MacOS To Merge
AHuxley noticed the frightening little Ars story talking about a certain expectation that
iOS and MacOS will merge, leading to a single DRM-locked OS on your MacBook and your iPad. Certainly Apple would love a piece of every app sold. Now I'm sure that this has been discussed over there, but I wouldn't expect it any time soon.
If I were Apple I'd make a desktop iOS a user option like the current Parental Controls.
Apple tried this before; it was called At Ease.