Others like Apple actually deliver their products, and they work exactly like advertised. Microsoft is well known for announcing and promising products/vapourware years in advance. Like the HoloLens Minecraft demonstration at E3 2015. What a betray to the public eye it was. HoloLens has for technical reasons a very narrow field of view, the 3D content is only visible in a small area of the view, and cannot deliver the high hopes that were faked in the E3 demo. In the end it's just another augmented reality glass in prototype stage that at the moment fails to deliver and general public would be very unhappy with it. To prevent negative reviews of their demo unit Microsoft of course selected the audience carefully, so you will find just a few objective articles that mention the current problems like the incredible small field of view. But don't fall for the PR hype, they have a lot of money to spend, without trying it out yourself.
What people also always forget, because they fail to mention it, is the high amount preparation to set such a demonstration up. You need a 3D laser scan of the room and all objects, everything has to be static and shouldn't be moved. Than you need several high precision tracking devices connected to a central computer. The augmented reality glass ("HoloLens") needs to be connected via cable as well, otherwise you get those ugly video lags (seen in the clip). And you will see even the girl often just half of the body if you are standing next to her, because the glass shows only in a small area in the center the 3D augmented graphics as overlay (semi-transparent), and around that area you see your normal view through the glass without the 3D. So it's very annoying that you have to turn your head the whole time to directly point it towards where you want to focus, otherwise you see nothing of relevancy in 3D at all. It's bigger problem than with virtual reality glasses that show a dark background around the visible area (if at all). So this technology isn't new, but to get it ready beside very rough prototypes that are of little use for general public, it will take another 3-5 years, that's for sure.