Joined Cases C-282/04 and C-283/04: Judgment of the Court (First Chamber) of 28 September 2006 — Commission of the European Communities v Kingdom of the Netherlands (Failure by a Member State to fulfil obligations — Articles 56(1) EC and 43 EC — Special shares ( golden shares ) of the Netherlands State in the companies KPN and TPG — Distinction between controlling holding , direct investment and portfolio investment in the context of fundamental freedoms — State measure for the purposes of fundamental freedoms — Guarantee of universal postal service)