> Windows 8 showed how easy it is to get the hybrid approach wrong

On the contrary, a lot of people do find the hybrid approach very useful especially once they are accustomed to it. When travelling I take my Surface Pro instead of my laptop and by the time I am back, I am so used to touching and taping on my screen that I unconsciously do it on my laptop making me look like an idiot. I find touchscreens great and believe it is a means to complement your existing workflow, not replace it.