Even 10 years they wanted to stay. I was at Microsoft China at the time, and management would complain about Google or Facebook in CA still getting the best prospects from Qinghua/PKU. It wasn't about freedom or democracy at all, they just wanted big paychecks without the 996.

Today it is an easier case to stay, although 996 is still a thing. Still, if you can make your FU money by age 35 (and it still has to be by age 35 according to a relative), you have it set.