Unfortunately, B is the only one whose interests are commonly represented in publicly traded US companies these days. B is the prototypical Fortune 500 CEO.
This is the reasoning behind why some companies are staying privately-traded (e.g. Epic Systems) with some success. It makes it hard to raise money, but gives more control over executive management and company direction.
It's also why the B-Corp is becoming increasingly popular, as it can shield management against being sued for not profit maximizing.
Unfortunately, B is the only one whose interests are commonly represented in publicly traded US companies these days. B is the prototypical Fortune 500 CEO.