You might be surprised, went down some Wikipedia rabbit holes after the crash here and it seems we only act to prevent something terrible from happening after something terrible happens. I've been trying locate the article but haven't found it again yet, but there was a crash and investigation afterwards about 30 years ago that came to practically the same conclusions as the Boeing 737 MAX investigations a few years ago--basically that the FAA was too cozy with the manufacturer and exercised no real oversight, and the cost and corner cutting that was ignored got people killed.