Should a firm pursue profit even at the cost of hurting the overall economy and consumers?

(In answering this question, remember Adam Smith, who argued that societal welfare is maximized when every individual relentless chases their own self-interest, without regard for the interest of others. Also remember Milton Friedman, who argued that the one and only social responsibility of corporations is to increase profit. So, before for answer "of course not," you need to tell me what Smith and Friedman got wrong.)