DJI are hardly sitting on their laurels! Occusync, miniaturisation, multiple flight modes, more sensors, more control, continuous improvement of software (you may say that they should get it right first time) and now fixed wing mode. There are many competitors out there and DJI are well aware that if the also rans hit on something then they could end up playing catchup. Hence the innovation continuing.
GoPro will return. Now that they've dipped their toe and found the water a bit hot they'll understand where they need to go to get something competitive. Their removable camera/gimbal idea is a good one and if they keep that and redesign the rest of it they could have a
Phantom 4 Pro beater.
The future's bright, the only cloud being idiots, terrorists and OTT regulation and legislation.