Then US will stary harassing anyone relying on US who also trade with China without US tech. Then they will harass trading partner of China who have nothing to do with US. Then they will overextend in their diplomacy and collapse diplatically.In the West, they tell you about how the West is diversifying from China.
In reality, China is diversifying from the West.
This is why the US is resorting to tactics like "nobody is allowed to do business with China if they use any US technology," instead of tariffs or export bans - it's because those no longer work.
But as long as China keeps up in the technology race, that won't work in the long term, either.
Countries will just stop using US technology when trading with China, and then gradually, realize that they don't need to use US technology when trading with anyone else, either.