The jewel in DJI drones is the long range data link for video and control. It really is streets ahead compared to other non chinese players like Parrot. I remember with my bebops you could barely go a few hundred meters before quality dropped and lagged, while my phantom could do kilometers and it stayed rock solid, no lag and always in 720p.
I have seen various YT videos which mention that DJI and Walksnail who apparently also have a much better video link all use the same technology from the chinese gov. So yes DJI would be nothing without the chinese military "giving" them access to this tech.