The US is certainly capable of shutting down the internet with their control of some critical pieces of infrastructure like ICANN. They haven’t ever used it bec

The US is certainly capable of shutting down the internet with their control of some critical pieces of infrastructure like ICANN. They haven’t ever used it because levers like those are ones you only get to use once before other countries build an alternative, like when China shut down rare earth exports to japan years ago so countries like the US started up mines that were previously not worth it