European competition authorities have signalled a decisive shift in how the region’s largest online marketplaces are policed, with a fresh wave of investigations and compliance deadlines now in effect. The move marks the most active phase of digital enforcement since the Digital Markets Act came into force.
The European Commission has opened formal proceedings against several marketplace operators accused of favouring their own services in search results and product rankings. Under the new regime, companies designated as gatekeepers face fines of up to 10 per cent of global annual turnover, rising to 20 per cent for repeat breaches.
Regulators have also tightened rules on how marketplaces handle seller data. Platforms must now give third-party sellers access to the performance data generated by their own products, a requirement that campaigners say levels a long-standing imbalance in online retail.
“The era of self-preferencing is coming to an end,” said Elena Marsh, a partner specialising in digital regulation at a London law firm. “Marketplaces that treated compliance as a paperwork exercise are discovering that enforcement is now genuinely bite-first.”
The impact is already visible in seller behaviour. Retail analytics firms report that businesses trading across multiple European marketplaces are reviewing their channel strategies, with a growing number preparing formal complaints about ranking opacity and fee structures.
Smaller sellers appear to be the early beneficiaries. Surveys of marketplace vendors suggest improved access to customer insights and a clearer picture of how product rankings are calculated, although some complain that dispute resolution remains slow and uneven across member states.
Industry groups warn that the compliance burden falls unevenly, with mid-sized platforms outside the gatekeeper threshold facing similar obligations through national laws. Germany, France and the Netherlands have all introduced domestic digital competition rules that mirror elements of the EU framework.
The Commission has said it expects the enforcement wave to settle into a steady rhythm of market investigations and targeted remedies rather than headline-grabbing fines. For retailers and brands, the practical message is simpler: transparency rules are now a permanent feature of European ecommerce, and business models built on opaque rankings are running out of room.