Judgment of the General Court (Sixth Chamber, Extended Composition) of 20 September 2019.#Le Port de Bruxelles and Région de Bruxelles-Capitale v European Commission.#State aid — Corporate tax exemption scheme implemented by Belgium in favour of its ports — Decision declaring the aid scheme incompatible with the internal market — Concept of economic activity — Services of general economic interest — Non-economic activities — Severability — Selectivity — Article 93 TFEU and Article 106(2) TFEU.#Case T-674/17.