Except you are not on board the aircraft, you are looking at a screen and lacking the physical experience.
There is an Universal Studios close to where I live and most of the rides there are screen/3d based. The ones that have (slightly) moving seats/cars along with some wind effects to a fairly convincing job but it still doesn't come close to roller coaster.
Same as going to a live concert, motor race or air show is totally different than watching it on a screen, even if it is VR. You just can't mimick a fighter jet passing by with after burners. It's also much more difficult to relate to the person flying a drone vs somebody piloting a jet or race car. Those people are putting themselves at risk unlike some block sitting in a chair somewhere fiddling with some sticks flying his drone.
Thats why I think drone racing should be more action packed.
I'm sure drone racing can get pretty popular. It is interesting on different levels (e.g. racing, technical side etc) and probably one of the cheaper sports you can get involved requiring machines.