Microsoft and Apple diverged down two evolutionary paths.

At release the Surface seemed ridiculous, adding touch and pen tools to a normal computer. Apple went the other way starting from scratch, touch only seemed the sensible choice.

Now year on year as Apple adds more and more laptop computer into the iPad and it's Mac line lacks any modern input flexibility it's starting to look absurd they went down this route and the Surface line is making more and more sense the further we go down this road.