Please someone correct me, but my understanding is that Jitsi meet has a very different architecture compared to Zoom.
Jitsi Meet uses a "SFU" which means the A/V stream of each participant is sent to all the others. That basically does not scale in terms of network bandwidth.
Zoom seems to use a central server that kind of "mix" streams and send them to all participants. Or something hybrid.
Jitsi could be able to connect to an "MCU" like OpenMCU for this kind of architecture, but I have no clue if it is easy or not to deploy.
I am working in a full-remote company with ~15 people. Jitsi is ok for meetings with 2-4 people. With more people, it just does not work reliably. Zoom does.
It seems to me this example has nothing to do with the parent's comment. He is talking about co-ops. Companies that are owned by workers. It implies the company cannot be sold without a majority of workers to agree.
But you're right the funding scheme would be more challenging. But if the service sold is of very good quality, it may work. And the "not for private investors" model may also be something good to promote for (some) consumers.