Earlier quoted context omitted.
Again, you're conflating supply and demand with contribution.
Contribution as a term here is fluffy. I know what you are getting at but it makes no sense using it for some sort of comparison. What you need to look at is impact of decisions. If the CEO makes a wrong decision the entire company can go down. If a worker makes a wrong decision it's much less of an issue.
Unless the employee gets his hand caught in a machine, the press jumps all over it and stocks plummet 5%.