I think what PG's getting at is that you can't "look beyond" the fiduciary responsibility "mindset" without being fiduciarily irresponsible. Which is basically illegal.
Only if you CHOOSE to ACCEPT outside investors, and CHOOSE a board that doesn't have the same vision for the company as you do. I'm no lawyer, but I'm guessing if you own your own business, your fiduciary responsibility is to yourself.