When an aircraft crashes and the NTSB gets involved to investigate, does the aircraft manufacturer get sued? I don't know. Why can't we set up something like th

When an aircraft crashes and the NTSB gets involved to investigate, does the aircraft manufacturer get sued? I don't know. Why can't we set up something like the NTSB for critical infrastructure stuff at least? I can see how setting it up for consumer stuff would suck. But purpose of the org would be to make stuff safer and develop best practices, not assign blame. I'm probably naive, as I don't know all the good and bad details of how NTSB investigations work. But I figure that's a good place as any to find inspiration for something that could work?