Maybe there are other duties to other groups that are more important than your investors. I can't believe I even have to say that out loud. I can extend your fiduciary duty to uber easily insofar as them doing malicious things so long as the payoff was better than the legal costs. Hell I can extend this to certain evil pharmaceutical entities with little more additional effort.

Your logic is either naive or you don't care about your fellow man. If it is the latter, I wish you your just deserts