Could it be that newspaper and subway system that were named Metro are both operating locally so there's no brand confusion while Metro AG has worldwide operations?
More than likely, but it is understandable that nobody would want to be associated with what microsoft is pushing out as a UI.
I also wonder though that it is this late stage that perhaps Metro AG is not that big of a global brand that the only confusion would be non existant. Especialy as there business appears as unrelated as any paper or tube train.
Still its PR for Metro AG and given the late stage maybe some potentual pay off from Microsoft, why else leave it until now.
