Når en medlemsstat yder støtte til en virksomhed, kan det indenlandske udbud nemlig derved blive opretholdt eller forøget med den konsekvens, at chancerne for de virksomheder, der er etableret i de øvrige medlemsstater, for at tilbyde deres ydelser på denne medlemsstats marked, herved kan blive formindsket [16].
Where a Member State grants aid to an undertaking, internal supply may be maintained or increased with the consequence that the opportunities for undertakings established in other Member States to offer their services to the market of that Member State are reduced [16].