Berlin's reinstatement as the capital of Germany has raised great expectati
ons of its transformation into a major European metropolis. Some people eve
n claim that Berlin is moving in the direction of becoming a 'global city'.
A more common interpretation of the structural changes in Berlin's economy
sees the current developments in the regional economy as a process of stru
ctural adjustment with the West German metropolitan regions, assuming that
Berlin is in transition to catch up with the economic centres of the poly-c
entral German regional system. This position is highly questionable, since
first it ignores the overall trend towards a polarization between urban reg
ions in terms of their economic performance, their different sectoral speci
alization profiles and innovative capacity; and second it is based on a hig
hly simplified concept of the metropolitan regions' economic structure, the
concept of a 'service metropolis'. The purpose of this article is to under
take a critical appraisal of the vision of Berlin as a service metropolis t
hrough empirical observation of sectoral trends and specialization profiles
in four metropolitan regions of Germany. The comparative analysis of Berli
n and major metropolitan regions in Germany comes to the conclusion that th
e notion of a common development path of metropolitan regions' economies is
misleading. In contrast to the structural adjustment thesis, the developme
nt of Berlin in the 1990s might be better characterized as an 'open-ended'
structural break.