I hear so many people suggest that corporations are evil and that they ruin the world with their unethical behavior. But look at all the good things that corporations do for the world.
Do you want to live in a world with no cars, no electric lights, no bananas in winter, no movies, no media at all? Businesses may not always act perfectly, but collectively they create the world, the staus quo, that is the bedrock of our security and our comfort. I don't care how radical you are, you cannot deny the comforts of the 21st century unless you live in a shack in the woods.
On a micro, ultimately inconsequential level, corporations may act unethically. But it is in the service of a higher goal. And that goal is to provide people with the world that they love. What could be more ethical than that?