In a service which is theoretically liberalised, free competition may disappear as a result of the concentration of the service amongst large companies abusing their dominant position, agreements between companies and other similar circumstances.
Inden for en teoretisk liberaliseret tjeneste kan der ske det, at den frie konkurrence forsvinder, fordi tjenesten koncentreres på store virksomheder gennem misbrug af dominerende stilling, aftaler mellem virksomhederne og lign.