Capitalism is a system which aligns incentives so, if people want to get rich, they will do so in a way which also helps other people. Competition in the free market should drives prices down, which is equivalent to spreading profits among all the customers. (Of course, this only applies when the free market works well, which often requires regulation and pesky things like human rights). Capitalism is a system which works very well, and it takes a distorted view of the world to see this as 'two wrongs make a right'.

To be clear: there are many businessmen who are greedy selfish exploiters. However, the purpose of capitalism is to take these natural human tendencies and make them into a force for good.

You could say the same thing about democracy. It's a game whereby people can seek power and influence without having to kill each other or their subjects. If you doubt that democracy is an effective solution, just read up about all the Wars of Succession that Europe has witnessed when those countries were monarchies. Elections are practically love-fests in comparison.