Startups in US
Paul Graham writes about the magic and magnetism of Silicon Valley:
Startups happen in clusters. There are a lot of them in Silicon Valley and Boston, and few in Chicago or Miami. A country that wants startups will probably also have to reproduce whatever makes these clusters form.
The magic and magnetism of Silicon Valley is called "good infrastructures" "cheap bandwidth" and "open mind".
That is the reason why in most part of the world it is impossible to find the "magic magnetism". We have still to go a long way...