@atomicpoet
I would argue that smartphones didn't go through a gaming phase.
So... if someone were to build an AR/VR headset that is in the same price range as a TV, comfortable to wear, not straining to the eyes, usable as a first or second laptop/PC screen, that might sell a lot more.
Otherwise, the setup costs alone (load headset, check batteries, clear space, likely connect desktop PC...) make it less likely that someone will prefer it to... a monitor that already sits on the desk.