This should be posted automatically every time someone mindlessly parrots the myth about the duty to maximize shareholder value: https://corpgov.law.harvard.edu/2012/06/26/the-shareholder-v...
It still seems pretty evident that the power structure at larger companies necessitates that people do act in the interest of investors - as doing so is in their own best interest. I'm no expect and I'm sure more educated people could argue both sides of that though. In the end, I think the behavior of companies that exist is at the very least enough to suggest that the organization of companies in capitalism motivates profit above all else - to the point where horrible acts are committed frequently and are expected from larger corporations
For example, they could provide bonuses for making environmental improvements such as reducing pollution, or they could withhold them if the company gets in trouble for exploitation or criminal activity.