The arab world already has embraced liberal capitalism...
I still have a tough time buying China becoming the dominant economic power everybody says they will become (they are communist in name only -- they have spent the last few decades morphing into something else entirely). Competing on a GDP basis because of sheer power of workforce, sure, but the government is going to have to undergo a massive change in power structure and iron grip on information control in that country to have an impact where it matters -- innovation. China's population could be five billion people, and they will never produce a Steve Jobs or Bill Gates or Mark Zuckerberg in any arena, economic or political because of the control the Chinese government has over information. If they want to be on the same innovation level as US/western Europe, they are going to have to foster the kind of environment they have been working so hard to avoid since they gained power.
I'd say there are probably a good four thousand native Chinese students at my university so naturally there are at least a few in every class I've taken over three years so far. Every single class it's the same; they always stick to their enclaves in class, almost never outwardly demonstrate any aptitude for critical thinking or analysis, but nearly every single one I've seen is otherworldly good at information regurgitation.
Innovation is the backbone of economy, and until China sheds the environment and compulsory education system it has created, it will continue to be second rate. Their growth is still a dependent American and western business where it matters most.
India, on the other hand...