Besides the often quoted IP stealing from GB, there are also more recent examples.
At the end of WWII, not only the Soviet Union has moved piece by piece many industrial factories from Germany to Russia, but also USA and GB have "stolen" massive amounts of IP from the occupied Germany.
One of the most notorious cases in how the American industry of making magnetic tape recorders (e.g. Ampex) and of making magnetic tapes for them has been founded based on the samples brought back from Germany.
The case of the liquid-fueled rockets directly connected to this Apollo story needs no further mention.
Whenever they could get away with it, no country has refrained from copying foreign better technology.
While there in no doubt that China must have done this frequently in the past, in recent years there are little chances for them to benefit from this, because now in many domains their products are much more innovative than anything made in USA, and also in research publications they have many that are also more innovative.
I do not believe that sabotaging the Chinese companies that were on the brink to take most of the market share from US companies like Qualcomm and Micron has been the right strategy for counteracting the Chinese threat.
This is just a temporary setback for them and there is the risk that they could emerge from it stronger, no longer fearing any US blackmail.
This should have been either saved for a more critical moment, when it could have a greater effect, or the so-called "sanctions" should have been real sanctions, and not just anti-competitive measures, i.e. they should have been tied to some political demands made to China, e.g. to recognize Taiwan as an independent country, or to give up their claims to extend their maritime borders.