What's the point of business?

Clearly, I do not understand business and have no formal business training. However, I clicked on an article about Yahoo and read this:

"Clearly there's frustration," said Darren Chervitz, co-manager of the Jacob Internet Fund, which owns Yahoo stock. "I am not even sure if Yahoo cares about its shareholders because they didn't show much regard for shareholders' best interests in this process."

I did not know the entire point of developing a business was to care about shareholder interest. I prefer Amazon's Jeff Bezos' outlook in an interview with Business Week:

Q: But don't you have an obligation to keep the stock from sinking?A: We don't claim that our long-term approach is the right approach. We just claim it's ours. Our approach has been to be as clear as we can be about what kind of company we are and let investors choose.

Novel. Build your company and allow those who like it or believe in it invest, rather than running a company for investors. I also liked one comment Bezos made about innovation:

I believe you have to be willing to be misunderstood if you're going to innovate. That's actually a serious point. If you're going to do something that's never been done before—which is basically what innovation is—people are going to misunderstand it just because it's new.

Considering that I have seen posts criticizing Cross Over: The New Model of Youth Basketball Development as both pro-AAU and anti-AAU (for what it's worth, AAU felt it was anti-AAU), I understand being misunderstood.