Yes drone surveillance and facial recognition
Google banned, Facebook banned, Netflix banned, Uber ‘lost’, Amazon almost non existence.
Facebook and Netflix in China finally would fail. CCP just help them save money. Amazon was not banned but it just got failure in competition with Alibaba.
Those products got banned long enough to give domestic products time and money to do things on their own. If they were allowed at the first place, none of those products would exist, look all over the world where American tech do not dominate. If China let us in, the everyone of your Silicon Valley tech worked would double their net worth.
Export to where? US? 0% chance. Americans hate communists
TikTok is already popular in the US...