While we're talking about crazy things that would never happen... the US could have relentlessly nuked the Soviets after Japan immediately post WW2 (by rushing the further development of lots of more nukes) and ruled the planet for a few hundred years with an iron fist by threatening to obliterate any nation that even thought about acquiring nukes or related tech.
That didn't happen either, because it'd have been insane.
The US Govt. couldn't shut down 90% of the Internet in the US because it can't afford to do so, both due to the extraordinary outrage and financial costs involved. Aka it'd be insane to do it, and would be like committing political suicide for the politicians that desperately cling to power.
Lots of stupid things are possible, so what. The US Govt. could have shut down the Internet in 1995 too. And they could go on a murderous rampage with mini nukes targeting each metro in the nation. That's about as likely as the Feds shutting down the golden goose.