Defending against territorial conquest is considerably easier than defending against kinetic strikes on key manufacturing facilities

Not necessarily. Territorial war requires people. Defense from kinetic strikes on key objects concentrated on smallish territory requires mostly high-tech - radars and missiles - and that would be much easier for a very rich high-tech US corporation.

An example - Starlink antenna, sub-$500, a phased array which actually is like a half or a third of such an array on a modern fighter jet where it cost several millions. Musk naturally couldn't go the way of a million-per-antenna, so he had to develop and source it on his own. The same with anti-missile defense - if/when NVDA gets to it to defend the TSMC fabs, NVDA would produce such defense systems orders of magnitude cheaper, and that defense would work much better than the modern military systems.

If China bombs tsmc, we blockade the Malacca straits.

China's economy shuts down in a month, their population starves in another month