Google probably thought "Hey, what's the coolest part of Berlin, where we'd make engineers happy to be in?" and that's about it. "Subtleties"[1] about why it's cool, or what its response to Google being there, probably weren't considered.

After the selection had occurred, the procurement machine had been tasked and at that point it takes a lot of resistance to stop that machinery.

[1] For some real estate group in Google determining office locations.