On September 13 1970, the University of Chicago economist Milton Friedman published an article in the New York Times Magazine under the headline "The Social Responsibility of Business is to Increase its Profits". You can find it here. https://www.colorado.edu/studentgroups/libertarians/issues/f... Much of the shareholder-only ethic of US business is based on that article.
Mr. Fink and his investment firm seem (to me) to be part of a movement to relax that single-minded approach to corporate ethics. Obviously a company that extracts every bit of value from its customers, workers, and host communities leaves them less resilient and certainly less loyal to the company. Uber's the egregious example, but there are plenty of others. Mr. Fink is betting that companies who don't extract everything will have a longer future.
It's worth a try. The Friedman approach has now been tried, and it's not working as well as some might have hoped.