They're also insisted upon by courts to adjudicate wrongful termination cases as well as discrimination cases.
My elite 10 person team was doing a great job on Device A, while Device B had a team of 200 semi-skilled foreign contractors just barely keeping things on track. Then, somehow, the company decided to reorg my super-skilled team and promoted the leader of the contractor team.
From 3-4 levels up in the company, the Device A team and the Device B team were IDENTICAL. They were both delivering things on time and under budget, even though team A was costing the company 1/5th as much, they were both fine. These products were generating hundreds of millions of dollars or maybe even billions in revenue per year, so the difference $5 million/year and $25 million was irrelevant.
If I'd realized this sooner, I wouldn't have put so much effort into doing a great job at the expense of my own interests, and it would've been just fine