Anonymous exists because traditional power structures have failed to police the behavior of same power structures, so trying to claim that the "devil you know" will deal with the problem is to willfully ignore the problem. Because the "devil we know" has been utterly captured and has utterly failed and/or refused to enforce the law and rein in the bad-behavior.

I agree: Anonymous is a sub-optimal means of getting business people to follow a moral code--but the idealized method you were taught in 8th grade civics class (where corporate executives could be arrested for the illegal actions of their company) has utterly failed to do so, and has failed spectacularly for decades.

Against that backdrop, the existence of anonymous should hardly surprise anyone: The government has refused to stop the sleaze-fest--eventually, people get sick of the abuse and take action. Is it ideal? Nope. Is it suprising? Also nope.