Yeah, but it is much easier to conduct industrial espionage when the company you are trying to steal tech from has a physical subsidiary on your territory, and

Yeah, but it is much easier to conduct industrial espionage when the company you are trying to steal tech from has a physical subsidiary on your territory, and when they are legally required to be under oversight from one of the party people officially assigned to "oversee" that subsidiary. I have no illusions that the industrial espionage will stop entirely as soon as the US pulls out of China. Even now, without pulling out, FBI and DOJ routinely catch their spies red-handed in their attempts to steal tech from within the US territory. I imagine that after the US pulls out, industrial espionage efforts of China from within the US territory will only increase, as their previous main avenue for that (aka the US subsidiaries located in China) ceases to exist. However, doing so makes things more difficult, risky, and expensive for them, thus slowing down the rate of gains from industrial espionage.