I would argue it's more accurate to say tech companies take the "old-style" US approach. It's based on the idea that propaganda doesn't actually work. There weren't many actual communists in Russia, it was a dictatorship with mostly prisoners/hostages who were threatened into lying, and knew full well that they were threatened, and after the teenage phase is over, actually start asking "
why are we being threatened over this?".
So as soon as they left with little intention to return, they suddenly become the problem that socialists really hate to discuss: ex-Soviets hate socialism. It's like cults, or, if we're honest, there's other repressive groups and repressive ideologies that have loooooooooong lost their any usefulness and really only the repression remains.
In other words, if tech companies show Chinese that non-communist democratic states exist and how it is to live there, then no amount of CCP censorship will ever actually convince those people that the CCP has good intentions.
Judging by my conversations with Chinese, it's working.