It comes from the case against Henry Ford after he saw his company was making gobs of cash and decided to give some of that to his employees. Shareholders successfully sued him to stop this on the grounds that he has a fiduciary duty to shareholders.
He was sued for miss use of company profits, not for failing to maximize profits.
He took profits and was reinvesting in new plants and cutting car prices, while also ending dividend payments to do so. That was the crux of the case, ending dividend payments despite having money to continue paying them. This case is routinely held up as an example of shareholder primacy but has been dismissed as an example of such by most modern thinkers In the field, in large part because the court also ruled that he had final say on how to proceed with company operation. Increasing worker pay was not the issue, ending dividends to make capital investment was.
It comes from the case against Henry Ford after he saw his company was making gobs of cash and decided to give some of that to his employees. Shareholders successfully sued him to stop this on the grounds that he has a fiduciary duty to shareholders.
https://en.m.wikipedia.org/wiki/Dodge_v._Ford_Motor_Co.
As with anything legal, there is nuance, but the basic assertion that there is fiduciary duty to shareholders is not wrong.
He was sued for miss use of company profits, not for failing to maximize profits.
He took profits and was reinvesting in new plants and cutting car prices, while also ending dividend payments to do so. That was the crux of the case, ending dividend payments despite having money to continue paying them. This case is routinely held up as an example of shareholder primacy but has been dismissed as an example of such by most modern thinkers In the field, in large part because the court also ruled that he had final say on how to proceed with company operation. Increasing worker pay was not the issue, ending dividends to make capital investment was.