The interaction between enforcers of competition law, the DMA, and the GDPR: An Inquiry Into the Coherence of Enforcement Across Legal Domains

Author: Belle Beems
Publisher: Kluwer Law International
ISBN: 9789403542591
Published In: December 2025
Format: Hardback
Jurisdiction: Netherlands ? Disclaimer:
Countri(es) stated herein are used as reference only

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Description
Contents

Details

Over the past decades, a complex ‘puzzle’ has materialised in the regulation of personal data markets, in which the competences of enforcers of various legal branches and different legal orders or jurisdictions increasingly overlap. This timely and deeply researched book assesses the interplay in this context of competition law, the DMA, and the GDPR at the European Union (EU) level and in the legal orders of the Netherlands and Germany, with a particular focus on the mechanisms that facilitate the interaction between different enforcers.

Providing a full-scale coherence analysis of the relevant multi-layered frameworks, the author explores features such as the following:

characteristics of personal data markets
the enforcement of competition law, the DMA and the GDPR in the context of personal data markets, particularly
emphasising the interplay between these legal fields
rules of pre-emption and hierarchy of norms, as well as mechanisms for cooperation, and
the extent to which existing tools guarantee the coherent application of competition law, the DMA and the GDPR to personal data markets

The presentation draws on legislation, case law, policy documents, and legal literature, and provides recommendations for improving the overall coherence of relevant domains of law regulating Big Tech.

The book sheds welcome light on the division of tasks between EU and national authorities, with precise attention to important principles governing the complementary application of EU and national rules. It will prove of great value to practitioners concerned with privacy and the digital-related aspects of competition law, to competition and data protection authorities, and to businesses wishing to minimise compliance costs.

List of Abbreviations

Chapter 1. Introduction

PART I. Setting the Scene

Chapter 2. Personal Data Markets

Chapter 3. Institutional Design in the Multi-Level Legal Order of the EU

PART II. Intervention on Personal Data Markets

Chapter 4. Competition Law

Chapter 5. Competition Law and the DMA

Chapter 6. Competition Law and the GDPR

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Synthesis I: Part II

PART III. Pre-emption, Hierarchy of Norms and Cooperation