The study of 17 January 2014 is based on the theory that marketing services acquired by an airport operator, such as KFBG/DMG, will help to improve the airport's brand image and, as a result, to sustainably increase the number of passengers using the airport and not just the numbers on the air routes covered by the marketing services agreements and the airport services agreement for the term of operation set out in those agreements.
Ceci est confirmé également par le fait que les quatre accords de KFBG, DMG, Ryanair, LV et AMS ont pris fin prématurément, le 29 octobre 2005, lorsque Ryanair a suspendu le transport aérien de passagers entre KLU et STN pour des motifs économiques.