Tech decoupling? What they are going to "decouple"? Nasa and China don't even work together, China had to develop their own GNSS system because the U.S. force the Europeans against their will under the threat of export controls to not work with China.Except it’s not. Tech decoupling is bad for both US and China, but it’s obviously worse for China given that US is still stronger overall. China needs to attract global talent, build up an alliance system for international cooperation in R&D.
They are going to increase their export controls more? because every time the U.S up their export controls to China, U.S companies always end in the losing end, losing business to other companies. One example was how U.S. export controls destroyed the U.S. small drone industry and give rise to DJI, while 3DR was only able to export to a few countries, DJI was able to export to rest of the world, or when the U.S lost their machine tools business to Germany and Japan because their unwilling to soft their export controls, RIGTH NOW their is big debate whatever they should increase sanctions to SMIC because U.S. SME and EDA companies could be the biggest losers.
Apart from that, math is math, here and in the other end of the universe, so unless U.S. decide to censor their fundamental research to the rest of the world and risk becoming irrelevant nation in science, is almost impossible to stop knowledge to reach most of the world.
Chinese companies are part of most international technological standards, including U.S. born ones, their patents and knowledge fuel those standards. Not because the "CCP" wants but because is business, standards are a equalizer for everyone. RISC-V move to Switzerland to avoid interference, that action just tell you the nature of the modern world.
And there is a million more variables that Social "Science" experts do not understand over the modern technological landscape.
The only reason Chinese private companies should "De-Americanize" their commercial products as much as possible is to shield themselves from irrational sanctions from overzealous politicians and the possible comeback of Donald Trump. Force U.S. companies to create products less susceptible to this politicians.