Actually the Dutch are much more open minded, individualistic then other continental European nations. This is reflected in their openness and willingness to engage in conversation etc. They seem to have an interesting blend between individualist and collectivist. The Germans e.g. are much more conform and shy (Dutch and German soccer teams play very different: Dutch allow for some action, while Germans play according to formations they've practiced).

Before the U.S. economy took off in the 20th century, it was the UK and Netherlands which had the most dynamic and open market place. Further, the Netherlands were always a tolerant place for divergent political and religious views.