A couple of years ago I went to UAV expo in Las Vegas and even then it was clear that a lot of drone companies were technology looking for a use case. And there were demonstrations of drones that did things much better (like mapping a traffic accident scene) than existing technology that saved both time and got the highways re-opened faster.
Racing them with PoV cameras continues to be a lot of fun, it just isn't the multi-billion dollar sport yet, give it time.