Corporations don't act independent of some human's decision?
I'd assert that often they do. They act for the benefit of their shareholders, who elect a board of directors to protect their interests. But for a great many corporations, the shareholders are other corporations, and the ownership often forms incestuous cycles. In a good many of them, the directors and officers are beholden to institutional shareholders, which are other corporations, whose directors and officers are in turn beholden to institutional shareholders, in a never-ending cycle. And the cycle has broken loose from its moorings and appears not to have any human control at all.
Contributing to this has been several court decisions which offer the guidance that it is the fiduciary duty of a corporation to maximize its profits (while staying within the bounds of the law), even if that requires unethical (but legal) behaviour, Anything less is dereliction of that duty. Gone are the days when corporate officers could decide that it was better for profits in the long run to act ethically, so as not to give customers an incentive to take their custom elsewhere.
The System has awakened. We used to imagine that malicious AI would come from a deranged military system holding the world hostage under the threat of nuclear holocaust, but it has come instead from a deranged, and entirely automated, financial system holding the world hostage under the threat of economic catastrophe.