Slow? The chip ban was just a few years ago. The result? China is more or less self-sufficient in chips, about to catch up with the latest generation. They even banned China from using lithography machines. The result? China is now producing lithography machines that only few in the world could produce.

Let's face it - all bans were dumb. They just gave China the legal (per WTO rules) justification to start producing everything domestically. The bans work as a reverse tariff, as a protectionist measure that actually protects your competitor. If China did those, others could bring China to court at the WTO. But the US did that, so nobody can sue China.