If the world will be left without modern semi manufacturing, it will rm -rf half of the NASDAQ by default.
I feel it's the Silicon Valley itself which needs to acknowledge how insignificant they are in the bigger picture of things.
If I were some big "tech" company head like of Facebook, Amazon, Google, I would've at least gave a look how much the microchip supply chain can trip their companies.
Tan Hock Eng has over the last 5 years bought almost every major network gear chipmaker, and is now holding the entirety of the "cloud" industry under gunpoint for example. The "cloud" guys might be now spending more money on switches than on CPUs.
Now imagine, somebody else will rollup something equally critical.