Mandated interoperability has been used as a regulatory instrument in network industries. It is currently being discussed as a tool to ensure contestability and fairness in digital markets. The European Commission’s proposal for the Digital Markets Act foresees select vertical interoperability obligations for gatekeepers on ancillary services, app stores and side-loading of apps. The European Parliament’s amendments include horizontal interoperability obligations for messenger services and social networks.
Would those interoperability obligations really stimulate contestability in digital markets – or could some of them be harmful to competition and innovation?
To contribute to the debate, CERRE (Centre on Regulation in Europe) releases its latest report ‘Interoperability in Digital Markets‘, authored by leading academics Marc Bourreau, Jan Krämer and Miriam Buiten. This important work examines whether vertical and horizontal interoperability obligations are desirable policy objectives in the context of dominant online platforms, considering their impact on competition and innovation in the markets affected.