In my ethics in engineering class, we spent a lot of time talking about things like the Kansas City Hyatt Regency walkway collapsing. The takeaway for me was "Depending on what you are doing, people might die if you are too confidently doing things the wrong way."

Most people, even a lot of engineers, don't have lives on the line in their day to day. Things means that most people don't have the "What if I am wrong about this and people die?" part of their brain firing 24/7. For most people, the "consequences of getting things wrong" means either a lecture from their boss, or literally nothing. When people never have to face consequences for being wrong, they feel very empowered to be wrong.