What about privatized utilities then? What prevents e.g. electricity or phone companies from shutting down when they don't like some rules? It's a little more nuanced than "all or nothing".
Losing electricity or phone service for a day is going to make people more angry at the utility or phone company, regardless of why the shutdown has happened.
And if a utility threatened to shut down service instead of complying with a new government regulation, you can bet the government would immediately jail anyone involved in that decision.