Mutually Assured (Economic) Destruction. If destroying the TSMC factories is off the table, then China is incentivized to invade (to capture leading edge chip production). If the fabs are destroyed, it would take years to rebuild, which will cripple Chinese production of consumer goods using those chips.
Personally, I would be shocked if the US military doesn't also have a plan to "relocate" strategic personnel to the US in the event of invasion by China.
I’m not sure it’s proven China can build better products under their system than countries with freedom. Maybe only DJI are doing this in the consumer space today. The West/Japan/SK/Taiwan are still massively ahead in building the more complex components that China then assembles.
It appears the West is slowly untangling their economies from Chinese dependency and about 1/3 of stuff is made there today. With zero covid making them an unreliable manufacturing partner I doubt this will increase in the short term. I am pretty sure high end fabs will be returning to the west very soon and America could not have a better competitor than China to push them forward to new heights. I would bet on free countries producing most on the innovation over the next 20 years.
Personally, I would be shocked if the US military doesn't also have a plan to "relocate" strategic personnel to the US in the event of invasion by China.