China is not motivated by what makes economic sense. The party openly says this - the very fact corporations exist is a concession to not having achieved pure communism yet. The party openly hates the fact they need an economy, after having failed for the first few decades to operate without one.
All it takes, quite literally, is one hardcore communist after Xi who isn’t afraid of a second cultural revolution. Maybe a chance to fix all their consumption, housing, and youth issues once and for all in one painful societal restructuring? The very economic and social issues we point to as why they would never do it, I fear, might actually become reasons they will do it.
It's sad, but as long as people continue to believe in this mythology of "absolute freedom", it will continue to work.
I mean, we've sort of long assumed that increasing trade ties led to peace, and the detente between the US and China was long taken as proof of that axiom. But morons with half-formed ideas about trade policy can blow up detente in less than 100 days, as it turns out.
Have two nuclear powers ever gone to war directly?
I'm pretty sure it isn't going to happen because ultimately the leadership on both sides would be assured of being vaporized, and no leader on either side has the guts to actually die in a conflict (especially where there could very likely be no real winner, and no glory, at all).
As long as that holds, we're actually pretty fortunate in that we avoid these stupid types of wars, and we're forced into these frustrating (for chest-beating tough guys) economic rivalries instead.
China gets hurt more. They are an export economy. US will face some temporary pain, sure, but other countries build stuff as well. Meanwhile what does China do with all the materials piling up, millions out of jobs and a half a trillion dollar hole in their economy?