Breaking up MS I could understand--they were in a dominant position largely through questionable legal tactics involving strongarming OEMs to block them from distributing competing operating systems. But Google? They're in a dominant position because nobody else is as good at helping people Google things.
How would a German official break up Google? Perhaps Germany could bar them from supporting users (or products :-) in Germany, but in that bad case scenario, Google would just lose some small fraction of its business.