The corporation and the individuals are not the same things. A corporation can adopt a strategy and make decisions against the wishes of senior management or majority shareholders. Therefore, the corporation has its own agency and has the responsibility to adopt its own morals.
Corporate decision making is also a messy process. It is not always easy to point to one definitive person that made an ethically dubious decision. Often someone may have planted an idea, someone else signed off on it, someone else implemented it, but no single person can take responsibility for corporate action.
In the absence of the individual decision-maker, the company must have its own morals to protect against unethical behaviour.