alt Hacker News> TSMC owns 60% of the foundry market. So if China decides to invade Taiwan, that would likely mean ~60% of CPU and GPU manufacturing capacity permanently destroyed at once.
While it would certainly be devastating, do note that TSMC has fabs in places that aren't Taiwan. So their entire production wouldn't immediately go offline, and presumably China would still want to keep selling those products and would have an interest in avoiding destroying those factories.
If China suddenly decides it doesn't want to export electronics, though, then we're all super fucked. After all, what percentage of those TSMC chips flow through China to get mounted onto PCBs or need major supporting components from one of the "Foxconn Cities" in China?
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> presumably China would still want to keep selling those products and would have an interest in avoiding destroying those factories
It has been hinted by people who might know something that Taiwan has rigged their factories to explode if China invades to ensure China can't get a hold of those factories. I'm not sure if it is true, but it wouldn't be hard to do (the hard part is ensuring the explosives don't go off for other reasons)
These supply chains have very non-linear responses. Relatively small fluctuations in demand can have enormous effects on prices and leadtimes.
> presumably China would still want to keep selling those products and would have an interest in avoiding destroying those factories
There are rumours from seemingly credible sources that Taiwan has the TSMC factories (at least the ones located in Taiwan) rigged with explosives that they intend to trigger in case of invasion by China (as a disincentive against China invading). So China may well not have any say in the matter.