A) This was a multi-factoral event certainly but all of these other factor are "immediate causes" which can themselves be traced to absolute maximum return on equity as a more final cause.
B) No doubt "hard to restart" process are were involved. But the world relies on single-source, hard to restart, large scale production of many things today because these produce the highest returns for those who invest in them and the lowest prices for those who buy from them. And both kinds of actors have been willing to just stop producing rather than doing something that might be costly to keep production going (and they decided they didn't want backup before this for the same reason).
C) Supply lines that stretch around world exist as a combination of economies of scale and "labor market arbitrage" and both these are driven by return, even though "labor market arbitrage" doesn't increase efficiency or robustness.
D) Chip manufactures put money into "up-date" chip processes, notably leaving the sorts of chips actually used in cars woah fully under-invested and generally many sorts of lack of robustness can be traced down to money flowing only to the normally profitable. Shutting down production isn't necessarily that bad for a company - they don't wages and they can start back up once things stabilize. It's much less disastrous than making a bunch of stuff and not being able to sell it. Clearly, that thinking is guiding a lot of decisions.