A big cohort of economists would argue that the recent[1] German success comes in big parts because of the Eurozone, and how Germany is draining the Italian[2] industry because the Euro is too strong of a currency for Italy (because of cultural reasons, regarding saving behavior along others, Italy has been used to a way higher level of inflation than what Germans could withstand).
[1]yes recent, the situation was way different in the early 80s
[2] this applies to France too, but to a lesser extent.