Google and Facebook would be very happy to operate in China, but they're too closely tied to the US intelligence apparatus to agree to the terms that China requires.
No I didn't make this up.
And there was reporting like this: https://www.msn.com/en-us/news/world/zuckerberg-s-meta-was-w...
Although a few years they seemed to completely abandon the effort and started to criticize China, although I can't find the article.
You'll be amazed at how quickly Zuckerberg "adapts" to things. Which is why I never trust a single word that comes out of his mouth.