True, a cat-and-mouse game going on forever. Anyways, I don't believe they can succeed in walling such a monstrosity of technologies as the web, just by controlling some parts of it, even significant parts like the browser or search. It is only something governments can do by requiring a passport scan each time you open a connection (which is closing when you eject the passport from the scanner)
This is why Risc-V being developed in China and other countries and exported elsewhere is ironically a good thing at the base-level of computing. The chinese computers will require China's bugs, whereas exported good will NOT have it, otherwise it won't be bought.