> Who has been banned?
Various fans have been banned - https://www.buzzfeednews.com/article/skbaer/hong-kong-nba-fa...
Daryl Morey (disputed) - https://qz.com/1730643/china-asked-nba-to-fire-daryl-morey-f...
There was also Adrian Wojnarowski but I'm not sure about counting that because there were other factors in play. There may be others that I have missed.
> Can you explain how this isn't just common sense re: operating in a foreign country?
The fact that China makes it in their financial interests to restrict people on being able to comment on matters of international importance is exactly the problem, because this is a classic chilling effect. And, as pointed out, given our lax privacy laws, now China has all of the info they do. Given that they're happy to roll out, e.g. facial recognition and social credit scores, this isn't something to be happy about.
China is a beautiful country with many wonderful people. But I doubt I'll ever visit it as long as I could end up locked up for an old internet comment, like say, this one.
> Are international companies operating in the US "compromised" if they don't comment on US affairs?
You'll find no shortage of criticism of the US government from foreign companies and their workers in private capacity. To make this comparable, imagine if we had CFIUS rules whereby nobody operating in a foreign-owned company (including yours truly, a US citizen) could criticize, say, Trump or any other part of the government without risking their ability to do business.
I don't think anyone would say that it's "common sense" that I can't criticize Trump or the US government while working for a foreign-owned company subject to CFIUS rules, would you?
I think there would, rightfully, be a backlash if Trump tried to change these rules and the companies were put under a chilling effect. So I don't see why Xi should get a pass for that.