Google had an Oculus competitor in the works – but it nixed the project

If I had money to bet, and I had to bet it on a long shot, then I'd bet on "mobile AR" that more closely resembles Google Glass than the Rift, Vive, GearVR, etc.

I think mobile AR glasses could dethrone the smartphone as the communication/utility/entertainment device that nearly everyone uses. The glasses would look like "normal" prescription glasses. In their default "off" state they would function like normal prescription glasses (and sunglasses when outdoors). When turned on, they show the user essentially a large smartphone like display. The various lists, images, etc could be manipulated with small hand gestures near the users' laps.

I've done a fair amount of VR development. I've tried the Vive, GearVR, and Google Glass. The discomfort level of current generation VR headsets is, in my opinion, a deal-breaker. This is ignoring nausea.