This is game changing for simulators, and simulators are big business. Not just for games, either.
Even if every other application flops, that one alone, even just in the safety training space, will be a billion dollar industry very quickly.
A text readable experience also is game changing right away in a number of spaces. That and 3D mechanical design, or even 2D design for things like PCBs.
I actually think FPS games are the worst application. Maintaining orientation is probably impossible.