The adoption of capitalism and participation in international institutions doesn't imply that China has westernized. By 'westernize', most people mean that they expect China to adopt democratic, individualistic consumer culture and a political system similar to Continental or Anglo-Saxon democracies. I believe this is extremely unlikely. Radically 'unwestern' states have always coexisted with industrialized capitalism: Tsarist Russia, 2nd Reich and Nazi Germany, etc. Not to mention that most Asian democracies like Japan would hardly be recogzable to a Briton or American. The best-case scenario for an emergent China is probably a state that looks a lot like Singapore, Taiwan, or Japan. IMO, China fifty years from now will probably fall far more toward the authoritarian end of the spectrum.