vinney on Nostr: Nothing mythical about mesh networks. https://www.nycmesh.net/ ...

Nothing mythical about mesh networks.

https://www.nycmesh.net/
https://en.wikipedia.org/wiki/Guifi.net

to name a few.

And there's nothing mythical about the other two things you mentoined either, just look around the protocol you're using right now. Existence proofs abound.