I don't actually see why Google even bothered opening office in Italy. Italy is part of the EU so they could easily use their Ireland office for invoicing and everything else inside the EU.

Just as I don't think they have official offices in each US state they don't need to have offices in each EU state.

They are just looking for trouble given the peculiarities of each state which includes law and tax system but also gray stuff like corruption, political pressure, etc.