Do it in Finland. Tons of highly skilled workforce, lots of other startups, etc. I don't think the bureaucracy bit is too much of a challenge, especially when compared to US immigrations.
I'm actually a US citizen, but I'm sick of silicon valley and don't really fancy going back, unless it's for my wife (she's in biotech, and they're way more cluster-dependent than we are in computers).
Part of the reason I don't want to go back there is quality of life issues. While I'm sure Finland is a nice place for many things, it looks too cold and flat for my tastes. Also, the language is supposedly not very easy, and even though most people probably speak english well, it's always a plus to be able to integrate as much as possible.
Anyway, that's just my personal take on it, which comes down to my tastes, not anything objectively wrong.
PG never said "have to", he said you'll have better luck, everything else being equal.
> complicated immigration issues.
This is very true. It was even before 9/11 - search for Torvalds in this page:
http://query.nytimes.com/gst/fullpage.html?res=9800E0DC1039F...
> organize in Europe?
That's where the problems start - where in Europe? England and Ireland are probably the most company friendly countries.