I really hate to play the douchebag card here, but the US DOES have several very good reasons to think it's the center of the tech world. Just don't make me start naming names...
I'm not saying the contrary.. but I'm a dev, an engineer (the real kind), and also a scientist.. I know how amazing entities in the US are at those fields, but I've also seen how well places outside of the US can keep up right behind. I think the legislation in the US has helped it keep is head start in alot of ways, as the environment just isn't up to par in many countries. But as far as raw skill of individuals goes, there are many many outside of the US who can keep up, or completely blow us away in all of those fields
