> People won’t risk making mistakes if they feel they will do a bad job, lose respect from their colleagues or potentially hurt other people in that process.

This such an important and overlooked aspect to learning. Also one of the best things I experienced when working for a startup. For whatever reason I found the environment much more conducive to experimentation and failure. A working POC could change the direction of a project. Most things didn't seem possible anyway, so why not try?

Now at $BIGCO projects take a long time to start and are generally not full of surprises. A change in direction would probably be perceived as a negative of not thinking out your design more carefully.