Public infrastructure and taxes. Internet is handled by or function in a similar way to local libraries. Social media is replaced by locally run forums that use some kind of federated protocol for national connectivity potential. 99% of people don’t need global internet, private ISPs still exist but less people need global high speed connections so mostly businesses and important shit that needs to be off the public connections.

In theory. In reality it’s not on or off it’s always on and it’s high vs low voltage.