I’ve read of a couple small places. Was a coffee shop in the cities around here where they guy running it for 20+ years wanted to get out and the staff decided that rather than a new owner they would raise funds to buy it. Sort of run like a direct democracy with some rules based on seniority and such.

Like most anything P2P scale, consistency, and adoption are huge factors.

Don’t know about social media, but sites exist in systems like this: https://zeronet.io/