Americans have set up their government so that it more or less reflects the will of the people, and the relatively educated American public is not OK with the government taking drastic steps very quickly. For better or for worse, the Chinese government can move extremely quickly because they essentially answer to no one; if the government wants to raze a neighborhood for something, they do it. If they want to build a road, they move whatever's in the way and build it. In some ways it's incredibly efficient. But that's something the US government is not optimized for, and I'm personally glad for that.