I'm not so sure. If you took a drink every time you read "sorry for the short answer, I'm on mobile, I will edit it when I'm back on a real computer" on HN or reddit, your liver would die faster than Windows Phone. There's still a place for devices with lots of screen space and real input devices, and not just in the IT community (unlike with command line interfaces).

Command line interfaces are making a comeback. They are called "bots" for some weird reason, and all I've used so far are remote -- but it's still a cli.

I suppose I'm hoping for a point in the near future where AR/VR type glasses (or something like that) can be used with high enough fidelity and resolution to replace my desktop, physically. Coupled with virtualization and a good keyboard, I think the PC form factor could be fully obviated.

Waiting for Apple or someone to introduce "Retina VR"? The issue is, if you double the pixel density you quadruple the amount of work on the GPU. Few current graphics cards would be able to smoothly render content that high-res, yet.

Even if they were (2D rendering isn't that bad), we'd struggle to transmit it (neither HDMI nor DisplayPort could handle 16K or whatever we need for crisp enough VR rendering).

I don't think much work is done or will be done on mobile. For consumers perhaps. As soon as you need to do anything serious with a spreadsheet or code, you can forget the mobile. It's not a iOS vs Windows functionality thing. It's a form factor problem.

Mobile yes, but virtually no one uses voice commands once the novelty wears off (same as in the 90's) and AR is still incredibly niche.