Comment by kllrnohj
9 days ago
> 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?
> 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.
Why would Taiwan destroying its own assets disincentivize annexation goals that have existed long before computer chips were produced there?
Presumably at least in part because China's just as dependent on TSMC as everyone else (at least for the time being). So it's a form of Mutally Assured Destruction, kind of like nuclear weapons. If they actually have to be used, then everyone's in for a bad time, but seeing as nobody wants that, it acts as a disincentive.
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If Taiwan is being invaded, the annexation is happening. There's no longer any reason to disincentivize annexation. Destroying the fabs is about denying China a major prize.
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That question comes up every time this fact is posted, and it could be for the very simple reason to disincentivize annexation to a later date.
> 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)
ASML can also disable much of the equipment remotely, from Europe. So even if the buildings aren't actually bombed (they likely would be though), someone presses a button a few thousand miles away and most of it gets bricked anyway.
Dunno if I would trust any remote-bricking-capability in an environment where electronic warfare saturates all communication channels.
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Not to mention the number of random individuals, with enough access, who might want to sabotage them in those circumstances. And fuck knows what the Trump administration decides to bomb. And the general fog of war. And how delicate everything is.
These supply chains have very non-linear responses. Relatively small fluctuations in demand can have enormous effects on prices and leadtimes.