The Commission should investigate and assess whether additional behavioural, or, where appropriate, structural remedies are justified, in order to ensure that the gatekeeper cannot frustrate the objectives of this Regulation by systematic non-compliance with one or several of the obligations laid down in this Regulation. This is the case where the Commission has issued against a gatekeeper at least three non-compliance decisions within the period of 8 years, which can concern different core platform services and different obligations laid down in this Regulation, and if the gatekeeper has maintained, extended or further strengthened its impact in the internal market, the economic dependency of its business users and end users on the gatekeeper’s core platform services or the entrenchment of its position. A gatekeeper should be deemed to have maintained, extended or strengthened its gatekeeper position where, despite the enforcement actions taken by the Commission, that gatekeeper still holds or has further consolidated or entrenched its importance as a gateway for business users to reach end users.