Comment by GeekyBear

> Google left China when the government wanted all keys to the citizens data.

Google left China after China started hacking into Google's servers.

> In January, Google said it would no longer cooperate with government censors after hackers based in China stole some of the company’s source code and even broke into the Gmail accounts of Chinese human rights advocates.

https://www.nytimes.com/2010/03/23/technology/23google.html

They were working to reenter the China market on China's terms many years later, when Google employees leaked the effort to the press. Google eventually backed down.