Tor doesn't scale, unfortunately.

Email scaled, and you could route outside of this censorship mess but no one does.

Ham radio, can work at scale, shame ppl don't use cuz it's hard. It could be as big if not bigger than centralized comms. We had a handle held repeater covering the whole city with full signal.

Electricity is censorship resistant. Sounds silly but it's not true for nat gas. Unless you have a well.

IRC scales, but too hard for most ppl.

XMPP scales but never took off.