Not all of them aimed for a broad market. Daqri originally was aiming at industrial/construction use instead. Their headset was built into a hardhat and it seem

Not all of them aimed for a broad market. Daqri originally was aiming at industrial/construction use instead. Their headset was built into a hardhat and it seemed like a decent niche if the capabilities were there. The real issue seemed to be a combination of cost and overpromising the tech. I remember videos where they were acting like it would have an "x-ray" view of things for maintenance, linked to IoT sensors for data, but I'm not sure if any of that ever existed.