Well, maybe not in the long run. Or medium run possibly, but long enough for implosion.

I can't imagine that production would move all that fast from Germany to the periphery once German wages rise -especially since regional economics are at play, and there is a need for clusters.
Plus, is that really desirable? Waves of industrial migration?

It does make sense to have some level of long term specialisation between countries, but then there will always be asymetric shocks and we'll need transfers. Significant ones at that.

It should not be a problem for a union. That it is one shows that we are anything but.

Earth provides enough to satisfy every man's need, but not every man's greed. Gandhi