Germany's successes (by far the most successful team at european championships, one of the two or three most successful teams at world championships, no other team has reached finals and semifinals so often) may come right from the mediocrity of german national teams:
http://www.spiegel.de/international/...562068,00.html
What they say about the curse of having leagues with many international stars and national teams made of "mercenaries" I think myself, too. German national teams are not a speeding Porsche, but a reliable middle-of-the-road Audi, as the author puts it.