Well, not quite true. A company is not a physical being and ethics applies to interactions between human beings so in the case of the company as a whole, the statement is malformed.
However, the individuals working for the company to have a choice of acting ethically or not. It is up to you to leave the company if you do not agree on the policy or type of work. It is also up to the company to decide to let you go if you refuse to perform the work they assigned to you.
It is very, very simple, yet, humans crave complexity.