In fact, it's a bit like the film industry. Yes, most films in the cinemas of the world are American films. And most of these are fun amusement despite being idiotic. But I wouldn't make the statement that the fact that "Angels & Demons" is an American film is an indicator that America is on the right track, and that's exactly what you seem to be saying: Twitter and Facebook are American companies, so America is on the right track. I know you're a Web 2.0 VC, and you see the world through such goggles, but I don't think it's a standard indicator of a functional, healthy society.
As for your second statement, sure, Bratislava has its millionaires. Wealth distribution is always power law to some extent (but not because of people, but because certain talent aspects are always more heavily rewarded depending on the culture, time period, etc). What I'm talking about is exacerbating that. A good example is the Ivy League system, which takes very bright kids and very rich kids and mixes them up and gives them both the same degree. Again, it's about mechanisms that make the rich richer and poor poorer and eliminating those to whatever degree possible.