For widespread adoption we would need to wait another 10-15 years until semiconductors get <5nm, allowing low-power performance at the level of 1080Ti or better, unless we are fine wearing a backpack with a larger machine and battery.
I don't care if i'm tethered to a $3000 desktop PC, because I have an office anyway and it's where i'm going to work.
Presumably you're still going to need a keyboard.