65Furthermore, the public purpose of certain activities does not, in itself, constitute sufficient evidence to classify them as being carried out iure imperii, in so far as they do not entail the exercise of any powers falling outside the scope of the ordinary legal rules applicable to relationships between private individuals (judgment of 3 September 2020, Supreme Site Services and Others, C‑186/19, EU:C:2020:638, paragraph 66 and the case-law cited).