I'm not sure I follow but you may be misunderstanding me. I'm definitely not advocating for an omnipotent group of software developers making decisions for the industry as a whole. I can only assume you've seen that advocated for somewhere else and are equivocating it with my post?
At it's simplest level I think something like the SAG or profession sports players associations. Kept out of the way, stars can rise, and there if you need them. It'd be useful to be able to have an organization that I can say "Hey, I'm interviewing at Github, based on your verified compensation data that you keep, what can I expect?"
The fact is, our employers share and buy each others compensation data similarly for use in negotiations and when setting compensation. It only makes sense that the parties on the other side of the table do the same thing.