I often wonder why companies, even ones that are already rich, continue to do evil things such as help out the Chinese government with their suppression of their own people. The answer is that, no matter how rich a company/corporation currently is, they always want more money. It's like food to them; if they don't keep getting more in, the shareholders will punish the company's board; it feels, to them, like the company is 'starving'. It's no good for them to just make one big ton of money (Microsoft) and be happy with that - they must keep on getting more, always, for eternity. Food to humans is a good analogy. So, just as humans have to eat to survive, they companies/corporations have to eat (money) to survive, and try to survive they will. They'll even keep on eating if they're fat (have loads of money alredy), just like humans... unfortunately, companies don't even have the desire to slim again, like humans often do. To a company, getting as fat as possible is, and always will be, the ultimate goal - the point of its existance. This explains their neverending lust for profit, despite any consequences.
"To a person, animal flesh is food (vegetarians excepted). To a corporation, money is food, and like people, a corporation will do just about anything to ensure a consistent supply of food (money)."
This excellent summing up was written by user 'mcrbids' - thanks!