Instrumental approach
Instrumental approach is the perspective that the only obligation of a corporation is to maximize profits for its shareholders in providing goods and services that meet the needs of its customers.
Most famous advocate of this “classic” model is the Nobel Prize-winning economist Milton Friedman.
Friedman argues it would be unethical for a corporation to do anything other than deliver the profits for which its investors have entrusted it with their funds in the purchase of shares in the corporation.
Friedman also argues that, as an employee of the corporation, the manager has an ethical obligation to fulfill his role in delivering on the expectations of his employers.
Source: Ghillyer_Business Ethics A Real World Approach 2e