Re: @Pascal Monett - You do know
Interesting link. You'll notice, though, that it is quite clear that it refers to _small_ businesses.
In theory, the same laws and ideas apply to all corporations. In observed reality, for larger corporations, maximizing profit becomes (almost) the sole consideration. If making useful products at a decent price will do so, they'll do that. If killing lots of people will do so, they'll do that instead. (And I do not exaggerate. Consider the tobacco industry, which knowingly kills lots of people in a slow and disgusting manner. The history of the asbestos industry, leaded gasoline, and the fossil fuel industry's reaction to climate change arguably offer similar examples.)
Also not mentioned in that article is that corporations can exist for all sorts of reasons; if the shareholders want the corporation to maximize the world's supply of unicorns and rainbows, it will be the corporation's responsibility to do that. And some smaller businesses do so. But again, real-world megacorporations don't do that.
I run a (very small) business. I'm a big fan of capitalism as it works on my scale and at medium scales, and even (sometimes) at larger scales. But my fandom is a practical one, not a religious one.