131Finally, since all concentrations are assessed individually and in the light of the applicable factual and legal circumstances (see, to that effect, judgment of 13 May 2015, Niki Luftfahrt v Commission, T‑162/10, EU:T:2015:283, paragraphs 142 and 144), the fact that commitments have been refused in some, or even most, cases does not prevent them being accepted in a particular situation provided that they serve to resolve the competition problems identified.