Last Thought--

We don't really know 100% "for sure" what China's chip making capacity actually is. A LOT of manufacturing in China is done by the Military for internal consumption.

What if China has chip fabrication plants that no one knows about?

What if China is sitting on a stockpile of chips and is able to supply their military demand during a hot war.

If they have a stockpile, the US position is even weaker. They could simply outlast us.