The general public does, for those in the respective fields those safety lessons are ingrained in proper procedures and constititional knowledge. That's why start-ups in those fields are risky, usually their founders have never witnessed said procedures and knowledge at work, never worked under those procedures. Employees, especially early on, tend to be young an inexperienced as well. As a result, those companies neither have the constitiational knowledge nor the processes of their more mature counter part. Some try up make for this with "hacker" culture...

Those things are valid for everything from med tech to aerospace and, yes, cars. The dangerous thing so, and I saw that in real life, is when that culture spreads. Usually through juniors who gained their first experience in said start-ups, and not one of those legacy shops.

Edit: None of what I wrote prevents legacy giants from cutting corners themselves, the B737 MAX showed us as much.