If you have a device that looks and feels like traditional glasses, but enables you to create and place an unlimited amount of virtual displays of any size and shape you desire, which can follow you around as you walk, why would you ever want to replace those with physical displays?
Certainly, I would have some uses for such AR glasses, but I wouldn’t like to wear them all day unless they are literally (and completely unrealistically) invisible and weightless. They won’t replace displays.
What I’d really like is paper-like non-emissive, high-contrast, full-color-gamut, millimeter-thin, wireless multitouch displays I can hang everywhere. Those are similarly unrealistic though.