There have been so many attempts to make VR glasses that it's really not innovation at this point, it's just gimmicky throw-away pocket tech. Something far better to invent is a phone that can project on walls, or project a full-size keyboard onto a table for an easier writing experience.
Most of these companies are gutted by investors, and turned into profit machines... There are very few visionaries leading projects now, and huge hurdles with IP theft and related lawsuits that hold up most of the typical innovation, unless these companies come up with game changing ideas that focus less on pushing out ads, they're going to fail with micro-projects like this. VR glasses have been around for ages, none of what Zuckerberg demoed was revolutionary, gotta be honest about it.