51With regard to the criterion of trade between Member States being affected, it has been held that, when aid granted by a Member State strengthens the position of an undertaking in comparison with other competing undertakings in trade between Member States, that trade must be regarded as being affected by that aid. In this regard, the fact that an economic sector, such as that of financial services, has been involved in a significant liberalisation process at EU level, enhancing the competition that may already have resulted from the free movement of capital provided for in the Treaty, may serve to determine that the aid has a real or potential effect on competition and affects trade between Member States (see, to that effect, Cassa di Risparmio di Firenze and Others, EU:C:2006:8, paragraphs 141, 142 and 145, first indent).
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