Morality aside, the US government acted in its own self-interest by protecting industries within its borders. It is likely had any major US automakers been liquidated, more wealth would have been destroyed than created.
Extending the organism metaphor, forest fires can be a naturally occurring healthy event that promotes renewal. Sometimes, a fire will burn with enough intensity that the forest itself is destroyed. Should we try to prevent all forest fires, the most destructive fires, or let nature take its course?