South Park Commons — the collectives model for spurring innovation

From the NYT circa 2017:

…the [South Park] Commons aims to fill a hole in the tech landscape. Northern California is littered with incubators and accelerators, organizations like Y Combinator and Techstars that help small companies develop and grow. This is something different, a community you can join before you have founded a company or even when you have little interest in founding one.

The Commons is a bit like the hacker spaces that have long thrived in the Valley — places where coders and makers gather to build new software and hardware — but it moves beyond that familiar concept. Its founder, for one thing, is a female engineer turned entrepreneur turned executive.

From SPC itself:

SPC is a de-risking platform. The community addresses the social and intellectual components of risk—it provides a close-knit, high-talent group during the idea stage so members can reach founder-market fit before attempting product-market fit. The SPC Fund plays the more traditional role of de-risking finances: our recently-launched Community Grant works much like Emergent Ventures; the Founder Fellowship (we’re currently accepting applications) is designed to get would-be founders to take the plunge; and we participate in the broader VC ecosystem with some later-stage investments.

Reminds me of the Junto Club, not to mention the 18th century more broadly;  SPC itself cites Junto as a model.  Think of it as a technical community of people without full-time jobs, plus a venture fund.  On the ground, technologists hang out with potential founders.  Here is TechCrunch on SPC.

Which are other recent examples of successful “community” models for spurring innovation?