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.

Today’s rapidly flowing global economy, hit by recession following the financial crisis of 2008/9, means the geographical economic perspective has never been more important. An Introduction to Economic Geography comprehensively guides you through the core issues and debates of this vibrant and exciting area, whilst also exploring the range of approaches and paradigms currently invigorating the wider discipline. Rigorous and accessible, the authors demystify and enliven a crucial subject for geographical study. Underpinned by the themes of globalisation, uneven development and place, the text explores the diversity and vitality of contemporary economic geography. It balances coverage of 'traditional' areas such as regional development and labour markets with insight into new and evolving topics like neoliberalism, consumption, creativity and alternative economic practices. An Introduction to Economic Geography is an essential textbook for undergraduate students taking courses in Economic Geography, Globalisation Studies and more broadly in Human Geography. It will also be of key interest to anyone in Planning, Business and Management Studies and Economics.

Microeconomics in Context lays out the principles of microeconomics in a manner that is thorough, up to date, and relevant to students. Like its counterpart, Macroeconomics in Context, the book is uniquely attuned to economic realities. The "in Context" books offer affordability, accessible presentation, and engaging coverage of current policy issues from economic inequality and global climate change to taxes. Key features include: --Clear explanation of basic concepts and analytical tools, with advanced models presented in optional chapter appendices; --Presentation of policy issues in historical, institutional, social, political, and ethical context--an approach that fosters critical evaluation of the standard microeconomic models, such as welfare analysis, labor markets, and market competition; --A powerful graphical presentation of various measures of well-being in the United States, from income inequality and educational attainment to home prices; --Broad definition of well-being using both traditional economic metrics and factors such as environmental quality, health, equity, and political inclusion; --New chapters on the economics of the environment, taxes and tax policy, common property and public goods, and welfare analysis; --Expanded coverage of high-interest topics such as behavioral economics, labor markets, and healthcare; --Full complement of instructor and student support materials online, including test banks and grading through Canvas.

The maintenance of a fair, competitive market among member states is critical to the functioning of the EU economy. In this book, the first comprehensive, unifying view of market definition, Miguel Ferro adeptly explores the different economic-legal issues that arise in EU competition law.

The purpose of this book is to provide a guided tour through the theoretical foundations of spatial locations of firms and industries in an evolutionary economic framework. It addresses the issues of how a location of business in geographical space is selected and where economic activity may (re)locate in the future. The analysis is in the context

Local Electricity Markets introduces the fundamental characteristics, needs, and constraints shaping the design and implementation of local electricity markets. It addresses current proposed local market models and lessons from their limited practical implementation. The work discusses relevant decision and informatics tools considered important in the implementation of local electricity markets. It also includes a review on management and trading platforms, including commercially available tools. Aspects of local electricity market infrastructure are identified and discussed, including physical and software infrastructure. It discusses the current regulatory frameworks available for local electricity market development internationally. The work concludes with a discussion of barriers and opportunities for local electricity markets in the future. - Delineates key components shaping the design and implementation of local electricity market structure - Provides a coherent view on the enabling infrastructures and technologies that underpin local market expansion - Explores the current regulatory environment for local electricity markets drawn from a global panel of contributors - Exposes future paths toward widespread implementation of local electricity markets using an empirical review of barriers and opportunities - Reviews relevant local electricity market case studies, pilots and demonstrators already deployed and under implementation

This book summarizes how globalizing capitalism-the economic system now presumed to dominate the global economy-can be understood from a geographical perspective. This is in contrast to mainstream economic analysis, which theorizes globalizing capitalism as a system that is capable of enabling everyone to prosper and every place to achieve economic development. From this perspective, the globalizing capitalism perspective has the capacity to reduce poverty. Poverty's persistence is explained in terms of the dysfunctional attributes of poor people and places. A geographical perspective has two principal aspects: Taking seriously how the spatial organization of capitalism is altered by economic processes and the reciprocal effects of that spatial arrangement on economic development, and examining how economic processes co-evolve with cultural, political, and biophysical processes. From this, globalizing capitalism tends to reproduce social and spatial inequality; poverty's persistence is due to the ways in which wealth creation in some places results in impoverishment elsewhere.