@mho I am roughly in agreement with your ideas so far about commercial instances and public broadcasters.
A few others:
- social appliances in the home are great. I'd like to see more of these.
- cooperatives like CoSocial and social.coop are a good option.
- @blaine has suggested public libraries.
- Postal services could also be a good provider.
I appreciate individual operators but I think we ask too much of them.