Not missing something, just overthinking.
Two foundries make mining chips - TSMC & Samsung. If one of those 'goes down' there will far more industries affected than just mining as those companies make over 80% of all cutting/bleeding edge chips <5nm in the world. The only other two companies capable of <5nm chips are Intel and Global Foundries and they do not make mining ASIC'S. Think smartphones, video cards, cpu's, network çhips, etc. those are who would be affected with a far larger global impact.
Each company has several advanced node foundries so problems at one would be serious but the end of the world. Considering the number of miners shutting down or shifting to chase the AI bubble there will be more than enough new or used high end mining gear to go around.
If a TSMC or Samsung foundry goes down, while mining ASICs are the least of our worries.
We're talking a total blackout for smartphones, GPUs, and network hardwarethat’s the real bottleneck.
Duplicated the post by error ; and i can't delete this one original post is in minnning section ........... i will lock this one .