I keep wondering when the desktop/laptop form factor is finally going to die. I thought tablets would do it but that's obviously wrong. Phones, surprisingly, seem to be continuing to eat away at the desktop use cases, which is expected, but I wasn't expecting them to be carrying the brunt of it, and there are ergonomic limits to how far that can go.
VR is the obvious candidate to take out desktops. The solitary nature of desktop activities fits VR well. That's my new operating hypothesis: in 10 years it will basically be phones+VR, probably with TVs still strong.
VR will eat some of TV, but it can't really compete with TV's ambient nature. AR could, and will eventually kill TV, but I am skeptical it will make a dent in the home in this decade, because that's how long it will take to get miniaturization where it needs to be for home use.