Earlier quoted context omitted.
It has been done in the past, Taiwan is a special topic for the US, I don't know that they would let it get to that point without intervening either diplomatically or militarily.
Right, I'm just thinking that long-term military intervention to prevent capture/annexation of Taiwan is completely impossible, but short-term intervention meant to extract as many Taiwanese as possible prior to inevitable capitulation is very much an option.
But China could easily wreck Taiwan's infrastructure and industry without invading.