This may seem like a stupid question, but wouldn't the owners (including current senior management) know this, and be be able to double their wealth by squeezin

This may seem like a stupid question, but wouldn't the owners (including current senior management) know this, and be be able to double their wealth by squeezing out the inefficiency? Why does this break down? Is it because outside shareholders don't have voting power? btw - I like this question on HN because I expect the answers to be of higher quality than on Quora.