No, we've seen this happen before in China, where some US company becomes popular, e.g. millions of people in China have bought iPhones.

Then China requires the company's operations in China to be more than 50% owned by China. The TikTok thing is very much "what's good for the goose", but it's also the US acting more like China the authoritarian country.

> US social media startup

That also happened, e.g. YouTube (Google) operated in China prior to 2009, but Google US didn't much like censoring things on behalf of China.

Apple China (if such a thing exists?) is owned >50% by the Chinese state?

I couldn’t figure out if that is actually true

China had a longstanding requirement that companies operating there under certain conditions had to have majority domestic ownership. It appears they've relaxed it somewhat in recent years and now I'm not sure if it applied to Apple China or not.

But the distinction is somewhat redundant with their government structure anyway. If they want to force you to do something there, how much does it matter if they say "you have to because we have majority control of this company" or "you have to because we have a one-party system and control the law"?

If the US government e.g. orders a US company to censor criticism of the US, the company can sue them and plausibly win. If you can't do the same in China, you don't control that company, they do.