Comment by Grimblewald

but also, the reason we come together to work as groups is so that we can achieve more than we would as the sum of the parts. The same is true for horses, two horses that work well together put out more power than two individual horses. So the problem becomes when you identify one of your horses has 1.5x the output of the other, and think firing the weaker horse will lead to minimal productivity gains, you end up with egg on your face when you realise you are not left with a horse that works 1.5x, but rather a horse now working at 0.5x what what it was in a team. The exact same thing is true for team work, team sports, etc. There is no one person 'holding it all together' if there is, then that person needs way better support and realistically, should get the entire departments pay when the remaining department is let go.