Not that this thing isn't cool, but frankly it seems nearly entirely obsolete if Microsoft's Hololens turns out well, or something like it.
This thing has an advantage in that you only need the one for multiple people, but other than that the augmented reality approach has all the same advantages, with even greater capabilities in terms of user interaction by being able to directly interact with the hologram versus controls external to the box, and without the need for extra peripherals. And on top of that,
A lot of it will depend upon capabilities and price points (this thing is fairly expensive, but has a social advantage if equipping all your friends/family with a hololens is prohibitive/annoying), but while cool, overall I think this approach is too limited as the potential interactions aren't much different than what you could have now without holograms, using a 3d environment and 4 monitors.