Margrethe Vestager

Margrethe Vestager spent a decade as Europe's chief trustbuster, and in doing so became arguably the single most consequential policymaker in the modern data economy. As European Commissioner for Competition from 2014 to 2024, and Executive Vice-President for 'A Europe Fit for the Digital Age' from 2019, she turned Brussels into the world's most active regulator of how technology companies collect, use and monetise data.

Her landmark actions redrew the boundaries of corporate power over information. She fined Google a combined total of more than €8 billion across three antitrust cases involving Android, AdSense and Google Shopping, and secured a €13 billion back-tax ruling against Apple that was upheld by the European Court of Justice in 2024. These cases were not simply about market share; they were about who controls the data pipelines that underpin digital advertising, search and mobile ecosystems.

Vestager was also the political force behind the Digital Markets Act and Digital Services Act, legislation that imposed interoperability, data-portability and transparency obligations on the largest online 'gatekeepers'. Alongside the GDPR, which predated her tenure but which she enforced and extended in spirit, these rules established the EU's 'Brussels effect': regulatory standards for data governance that multinational companies now apply globally rather than maintain separate compliance regimes.

Before Brussels, Vestager built her career in Danish domestic politics, serving as Minister of Education, Minister of Economic Affairs and Interior, and Deputy Prime Minister, and leading the Danish Social Liberal Party. She trained as an economist at the University of Copenhagen, a background that shaped her data-driven, remedy-focused approach to antitrust enforcement rather than a purely legalistic one.

Her Commission mandate ended in November 2024, but her legacy persists in the enforcement architecture she built and in the generation of regulators worldwide who now cite her casework as precedent. She remains an influential voice in international forums on competition policy, AI regulation and digital sovereignty, and is widely credited with proving that democratic institutions can still constrain the largest data-driven corporations.