Would you want authoritarian governments to be able to demand Cloudflare stop serving those they consider criminals that are outside their borders?
International law is messy.
There is a procedure to get a foreign case recognized in the US, too, but it has to be serious, and it's not an easy process.
I again ask: is it desirable for any of those countries to be able to unilaterally force a company to enforce its laws regardless of where the individual in question is?
If CloudFlare chooses to do business in China, that's a choice they're making and it comes with consequences.
Maybe they can offer service where customers will only be served from equipment outside of China, maybe that's not something they choose.
They can easily order it to reveal the origin server of a website, or the sign-up IP address of the account, or to stop providing services to one.