There’s a reason for that. DJI expended considerable effort and expense in educating and setting up programs for law enforcement, insurance, SAR, and infrastructure inspection outfits. In so doing they severely biased high level users towards DJI products.
This has made it quite difficult for other brands to make serious inroads in those areas, but at the same time it’s their own fault. Had they been looking at a long term business plan instead of short term, quick turnaround revenue plans they could have been equally involved in business development processes. In looking for the quick buck they positioned themselves at the back of the bus.
So pretty much everything you will encounter is at least somewhat DJI centric. Business people call this “packaging”, and it’s the most difficult part of overcoming the DJI bias.