I would say you are lucky. I lived in my college town for 20years and it started out chock full of co-ops in the 80s and by the time I moved away they were all hardly recognizable or gone. Food co-ops, housing co-ops, internet co-ops… all mutated away from shared labor or were replaced by sole ownerships.
My wife works for an employee-owned engineering company, but they are anything but FOSS in their culture.
I hope these intermediate management structures that combine expertise and collective ownership grow more. But it still isn’t a slam-dunk that should be assumed to be the stupidly-obvious approach unless such organizations compete with the grifters… and then their success won’t be due to the fact that they are using FOSS but that they present a track record of success as an organization.
When you come across some Python code for something written 5 years ago and they used four contributed packages that the programmers have changed the API on three times since then, you want to set up a virtual environment that contains those specific versions so you can at least see how it worked at that time. A small part of this headache comes from Python itself mutating, but the bulk of the problem is the imported user-contributed packages that multiply the functionality of Python.
To be sure, it would be nice if those programmers were all dedicated to updating their code, but with hundreds of thousands of packages that could be imported written by volunteers, you can’t afford to expect all of them them to stop innovating or even to continue maintaining past projects for your benefit.
If you have the itch to fix something old so it works in the latest versions of everything, you have that option… but it is really hard to do that if you cannot see it working as it was designed to work when it was built.