As far as the Chinese censorship issue, that is a tricky situation. China is a gold mine of growth potential, which Google obviously has interests in tapping. They cannot risk losing access to that market over censorship issues. In a business sense, censorship seems justified to me given the situation. China is just that important.
Apple is the company who I worry will become too big and powerful. The difference between them and Google is that they are decidedly NOT in favor of open access. They are exactly the opposite from google, building walled gardens around their stuff to prevent competitors from sharing in their glory. The iPhone is a perfect example. As someone interested in wireless startups, I lose sleep over the Apple and their iPhone. Its hard to compete with Apple when they dont let anyone else in on that platform. I think there are a few things startups could do better than Apple on the iPhone, but as it stands right now this is a nut that just cant be cracked.