Earlier quoted context omitted.
They left out "size and wealth of domestic market" and "access to capital," which I suspect are the most important factors beyond a minimal level of market fairness. It's really not self-evident that the vast majority of successful companies are started in the US?
As proven time and time again, most popular does not mean "the best".(especially, considering how many people there are in the US compared to any EU nation. That'd certainly explain the "number of successful businesses".) Do you think those people starting companies would do any worse, if we placed them in, say, Denmark? EDIT:Or maybe Israel, which has the highest density of start ups worldwide? I'd be curious to see…
Yes. Facebook, Apple, Google, Tesla, etc. would never have happened in Denmark. I'm really glad my parents did the annoying work of immigrating to the SF Bay Area from Germany when I was a kid. Otherwise I would have wasted years of my life doing it myself.
Did you watch the Elon Musk interview posted here the other day? He said more-or-less the same thing: it was really obvious, growing up in South Africa, that California was the place to be to make things happen.
Edit: I don't know much about Israel. They seem to be doing a pretty good job, based on what little I do know. It doesn't sound like they're at SF Bay Area levels yet, but making progress: http://aleph.vc/the-israel-venture-capital-index/