To me, it's about moving in this direction. Apple shows no interest in doing the work in MacOS to go here, and it's puzzling. Microsoft has iterated and iterated on it until it's pretty good. Not perfect, but they've already moved through a lot of the pain of making touch work well, and they're not stopping. When Apple figures out in 2018 that they need to ship touch screen laptops, they'll be years behind in UX on them... it's not as if they'll get it right on their first try, either.
* while the mouse is precise and allows for high information density, touch requires big targets since a finger is not so precise - so Windows 10 has big targets that waste lots of space relative to a UI that is designed solely for mouse/trackpad use
* touch allows interactions like swiping, pinching, and multi-finger gestures, but because Windows 10 has to support a traditional mouse as well these are rarely used or aren't used effectively
A touchscreen does not work well with an interface that's designed primarily for use with a keyboard mouse, likewise a keyboard/mouse can't replicate all touch interactions effectively. Trying to design for both in the same UI creates a lot of compromises that will delight neither group.