It isn't just the shareholders they have a fiduciary duty to: they also have the duty of care, the duty of loyalty, and the duty of good faith. Selling to an ad

It isn't just the shareholders they have a fiduciary duty to: they also have the duty of care, the duty of loyalty, and the duty of good faith. Selling to an adderall-addled toddler just because he happens to have accumulated more money than any person should have could be argued to violate all three.