As the population of Norway is less than 1/60th part of the US then there is bound to be a massive difference of course but they do exist and Norway does in fact have quite a few fairly well off people. There is even a Wikipedia page listing the top six. Norway is ranked 25th in the world in number of billionaires with 14 so in terms of billionaires per capita it beats the US by a fair margin. Of course, their total wealth is much less.

Anyway, yes there are angel investors and companies that exist only to match them to those needing the money. Again, probably not on the scale you will find in Silicon Valley.