Might also explain why these drone organizations you see are following normal business models rather than trying to be CBOs themselves. And all of them focus on the commercial side though a few also support the recreational side of things. A couple even offer Primary Insurance for the Rec side. I have a contact with one of them, maybe I'll ask his reasons.

Thing is, based on what US Code states I can see where the AMA really doesn't fit the bill either. In particular the education side of it.
"(B) provides educational or related services to individuals in the community.”

Especially when one reads the definition of "Related Services".

To me CBO seems to be more a supporting part of the education system, like the PTA. And in particular geared towards the indigenous peoples of the United States. Could be wrong but that's the way I see it all leaning at the moment.