i don't have the free time to pursue it but a thought that hasn't let me go since it popped up a couple weeks ago, is that it sounds like a much more feasible ambition to build a cooperative coworking space in my town, than to build a web dev cooperative from scratch either locally or distributed.
wouldn't be quite the same as having co-owners in my software work but it'd scratch a lot of the same itches, i'd bet
social.coop is a cooperatively-run corner of the Fediverse. The instance is democratically governed by its members, who generally share an interest in the co-op model, but topics of discussion range widely.
Our instance is supported by sliding scale contributions of $1-10/mo made via Open Collective. You must have an active Open Collective account to apply for membership; you may set one up here