The demonstrated software doesn't look too compelling (mostly floating 2D app windows), but I could see this becoming the ultimate learning/training tool. Interactive, step-by-step guides/instruction on how to do literally anything would be incredibly useful (play an instrument, vehicle maintenance, cooking, etc.)

If the hardware is sufficiently good, eventually the software will come, which is probably why this initially targeting the pro market. I'm skeptical the current frameworks make it easy enough to build quality AR apps, but hopefully the difficulty will go down eventually (maybe with the help of AI).