Re: @Cynic_999 - being seen from the air while naked
So what you are pointing at are modified cameras that permit updated lenses.
In the case of DJI you are flying through the same camera as used for photographic purposes and for the most part these days they are DJI specific items
Additionally so that isn't going to go too well as you need a wide FOV to fly the damn thing and there is no method of changing the 'zoom' when in flight.
For most consumer kit the weight of any useful long range lens (even these days) will limit it's usefulness and by the time a suitable gimble (as it would need to be a good one that copes with more than an ultra light action cam) the weight and therefore the machines size goes up again.
I have a lightweight gimble for a small DSLR & associated lens that I am repairing (for a commercial pilot) and I could assure you no DJI available in an electronics store would be lifting it off the ground even without a camera in place.