Across the world, regulators and policy makers are grappling with how to establish a competitive, safe and fair online environment that also safeguards users’ fundamental rights as citizens. Ahead of the European Commission’s Digital Markets Act (DMA), this book “Digital markets and online platforms: new perspectives on regulation and competition law“, presents CERRE’s latest contribution to the debate with concrete policy recommendations. Together, the policy recommendations in this book present a roadmap that should be pursued for EU policy makers to safeguard competition and innovation in digital platform markets. They can be organised into three key areas for action: (i) More effective enforcement, (ii) increased transparency and switching easiness, and (iii) providing access to key innovation capabilities. “The need to safeguard fair and vibrant competition, which is also seen as an important driving factor for innovation, is nothing new for policy makers. However, the characteristics and complexities of digital markets have challenged some of the traditional approaches.” – Jan Krämer, editor of the book and CERRE Academic Co-Director The book’s recommendations highlight that platform transparency and associated data collection by authorities, as well as data sharing by platforms (initiated through consumers or authorities), are the two most important overarching policy measures for platform markets in the near future. They facilitate enforcement, consumer choice, and innovation capabilities in the digital economy. The contents of this book were presented and debated during a CERRE live debate with guest speakers Anne Yvrande-Billon (Arcep’s Director of Economic, Market and Digital Affairs), MEP Stéphanie Yon-Courtin (Vice-President of the European Parliament’s Committee on Economic and Monetary Affairs) and Javier Espinoza (Financial Times’ EU Correspondent covering competition and digital policy).

The digital economy is gradually gaining traction through a variety of recent technological developments, including the introduction of the Internet of things, artificial intelligence and markets for data. This innovative book contains contributions from leading competition law scholars who map out and investigate the anti-competitive effects that are developing in the digital economy.

With the rise of digital platforms and the natural tendency of markets involving platforms to become concentrated, competition authorities and courts are more frequently in a position to investigate and decide merger and abuse cases that involve platforms. This report provides guidance on how to define markets and on how to assess market power when dealing with two-sided platforms. DEFINITION Competition authorities and courts are well advised to uniformly use a multi-markets approach when defining markets in the context of two-sided platforms. The multi-markets approach is the more flexible instrument compared to the competing single-market approach that defines a single market for both sides of a platform, as the former naturally accounts for different substitution possibilities by the user groups on the two sides of the platform. While one might think of conditions under which a single-market approach could be feasible, the necessary conditions are so severe that it would only be applicable under rare circumstances. To fully appreciate business activities in platform markets from a competition law point of view, and to do justice to competition law’s purpose, which is to protect consumer welfare, the legal concept of a “market” should not be interpreted as requiring a price to be paid by one party to the other. It is not sufficient to consider the activities on the “unpaid side” of the platform only indirectly by way of including them in the competition law analysis of the “paid side” of the platform. Such an approach would exclude certain activities and ensuing positive or negative effects on consumer welfare altogether from the radar of competition law. Instead, competition practice should recognize straightforwardly that there can be “markets” for products offered free of charge, i.e. without monetary consideration by those who receive the product. ASSESSMENT The application of competition law often requires an assessment of market power. Using market shares as indicators of market power, in addition to all the difficulties in standard markets, raises further issues for two-sided platforms. When calculating revenue shares, the only reasonable option is to use the sum of revenues on all sides of the platform. Then, such shares should not be interpreted as market shares as they are aggregated over two interdependent markets. Large revenue shares appear to be a meaningful indicator of market power if all undertakings under consideration serve the same sides. However, they are often not meaningful if undertakings active in the relevant markets follow different business models. Given potentially strong cross-group external effects, market shares are less apt in the context of two-sided platforms to indicate market power (or the lack of it). Barriers to entry are at the core of persistent market power and, thus, the entrenchment of incumbent platforms. They deserve careful examination by competition authorities. Barriers to entry may arise due to users’ coordination failure in the presence of network effect. On two-sided platforms, users on both sides of the market have to coordinate their expectations. Barriers to entry are more likely to be present if an industry does not attract new users and if it does not undergo major technological change. Switching costs and network effects may go hand in hand: consumer switching costs sometimes depend on the number of platform users and, in this case, barriers to entry from consumer switching costs increase with platform size. Since market power is related to barriers to entry, the absence of entry attempts may be seen as an indication of market power. However, entry threats may arise from firms offering quite different services, as long as they provide a new home for users’ attention and needs.

In many economic sectors – the digital industries being first and foremost – the market power of dominant firms has been steadily increasing and is rarely challenged by competitors. Existing competition laws and regulations have been unable to make markets more contestable. The book argues that a new competition tool is needed: market investigations. This tool allows authorities to intervene in markets which do not function as they should, due to market features such as network effects, scale economies, switching costs, and behavioural biases. The book explains the role of market investigations, assesses their use in the few jurisdictions where they exist, and discusses how they should be designed. In so doing, it provides an invaluable and timely instrument to both practitioners and academics.

This collection of essays represents the first in a series of two volumes that set out to reflect the state of the art of antitrust thinking in digital markets in jurisdictions around the world. The issues it tackles are many: the role of innovation, the conundrum of big data, the evolution of media markets, and the question of whether existing antitrust tools are sufficient to deal with the challenges of digital markets. Each author tackles the overarching themes from their unique national perspective. The resulting tapestry reflects the challenges and opportunities presented by the modern digital era, viewed through the lens of competition enforcement.

Through three case studies, this book investigates whether digital industries are naturally monopolistic and evaluates policy approaches to market power.

Controversy shrouds sharing economy platforms. It stems partially from the platforms’ economic impact, which is felt most acutely in certain sectors: Uber drivers compete with taxi drivers; Airbnb hosts compete with hotels. Other consequences lie elsewhere: Uber is associated with a trend toward low-paying, precarious work, whereas Airbnb is accused of exacerbating real estate speculation and raising the cost of long-term rental housing. While governments in some jurisdictions have attempted to rein in the platforms, technology has enabled such companies to bypass conventional regulatory categories, generating accusations of “unfair competition” as well as debates about the merits of existing regulatory regimes. Indeed, the platforms blur a number of familiar distinctions, including personal versus commercial activity; infrastructure versus content; contractual autonomy versus hierarchical control. These ambiguities can stymie legal regimes that rely on these distinctions as organizing principles, including those relating to labour, competition, tax, insurance, information, the prohibition of discrimination, as well as specialized sectoral regulation. This book is organized around five themes: technologies of regulation; regulating technology; the sites of regulation (local to global); regulating markets; and regulating labour. Together, the chapters offer a rich variety of insights on the regulation of the sharing economy, both in terms of the traditional areas of law they bring to bear, and the theoretical perspectives that inform their analysis. Published in English.