market saturation
noun[U]
MARKETING,ECONOMICSukusasituationin which no more of aproductorservicecan besoldbecause there are no morepossiblecustomers:
Asmobilephoneoperatorshavenearedmarketsaturation, they haveturnedtheirfocuson gettingpeopleto usetheirmobilesmore often and topayfor new non-voiceservices.