I'm pretty sure if MS gets Windows Pro improved stepwise to work more and more in the direction users want to the degree where then their touch laptops/tablets/convertibles start selling better and better and/or Android tablets continue to sell in larger and larger quantities than iPads, at some point Apple will do something about it, no matter at all what they say on the topic right now.
Apple before releasing the iPad mini acted as if it was the most hilarious stupid idea to release a tablet in that form factor, back when they didn't have one ready and the competition did.
Similar story with a larger phone and we already saw them changing their stance for that partially and probably will see em backpedalling from that stance way more this year.
Of course they would say its all nonsense until they have a good offering ready, that's how Apple has been doing it for many years.
Thing is, while something in the direction of an iPad with more pro features or a laptop/convertible with touch support will likely (have to) come from Apple at some point, this "concept" video is not a good visualisation for it.
A good concept video actually showing some nice concepts for how one could do something like that would be neat, this video is just doesn't take that very far.
Just adding a wireless keyboard and mouse and swiping around on the dock doesn't make mac OS touch friendly nor does it automatically make that a nice device to have/want.
In a way i feel like maybe that's a bit how it happened that windows rt/windows 8 pro was released in that form: Someone made a blinky metro startscreen which looks fresh at first glance, they said great concept and went ahead with it, without properly thinking and implementing it through what all else HAS to be done to make it really well usable with mouse and keyboard and touch.
Hence then it missing the most basic fundamental features users of either side would expect from such a hybrid OS/device,
like that control hit areas become larger when using with touch, or that when pressing an input textfield with the finger (no matter if on the desktop or somewhere else) it should then automatically bring up the onscreen keyboard or one should be able to use pinch to zoom anywhere or that one should be able to run metro apps on the desktop and be able to resize them freely and when using things with keyboard and mouse on a larger screen in workmode, suddenly fullscreen enforced apps are generally a way less good idea and people then expect to be able to do everything with an app/window they expect to be able to do with a window on their desktop OS.
Or also things like that noone in the windows tablet/convertible world has figured out an ideal way yet for what to do with the hardware keyboard so that it doesn't get in the way when using the thing like a tablet, but is ready and as good to use as a laptop keyboard when wanting to use it and one should not have to carry around additional separate pieces like a tablet and detachable keyboard.
Its neither an ideal solution to fold a always connected hardware keyboard to the back of the screen in tablet mode so that one feels the keys on the back when using it like a tablet, nor is a solution like the surface ideal where one has to carry around a detachable keyboard, no matter how thin it is.
Actually its bad that the surface keyboard is so thin, it would be much better if it was thicker (maybe by having a large battery in it), so that one could at least when its connected have it be as main weight center so that one could then angle the screen to any angle without the thing falling over. Just having an extra stand which one can only use in two angles is lame.
So yeah, i'm not against someone doing a concept video, it can be very cool when done well and when you think about it, many devices we now have are to some extend based on concepts previously presented in sci fie movies/series, but yeah, this concept video just ends where the good concepts parts should start to get thought about and be shown.
A proper concept should at least show some visualisation for how such problems could be tackled.