The modern economy is driven by people's greed and the desire to stand out. Trying to make everyone equal doesn't really work because people are different in how hard or smart they work. This isn't just about Islamic countries. Look at places like the Nordic countries; people are really happy there because they have what they need, but you don't hear about big new inventions coming from them often. Capitalism, where people compete in business, isn't always a bad thing. It's like a tough game. If you don't learn the rules, you might end up losing.