Discussion papers

Project B05: Discussion papers

Implementing and Enforcing the EU’s Digital Gatekeeper Regulation: A German Perspective on the Role of National Authorities¹
673/2025, B05, Jens‐Uwe Franck
Damages Actions Against Digital Gatekeepers for Breaches of EU Antitrust Law and the DMA: A German Perspective²
671/2025, B05, Jens-Uwe Franck
Organized Voters: Elections and Public Funding of Nonprofits³
601/2024, B05, Camille Urvoy. Published in American Economic Review 115 (2025), 183-219
Germany’s New Competition Tool: Sector Inquiry with Remedies⁴
598/2024, B05, Jens-Uwe Franck, Martin Peitz
Product Recommendations and Price Parity Clauses⁵
595/2024, B03, B04, B05, Martin Peitz, Anton Sobolev. First version: September 2024
Ratings with Heterogeneous Preferences⁶
594/2024, B05, Jonathan Lafky, Robin Ng
Free and Open-Source Software: Coordination and Competition⁷
585/2024, B05, Robin Ng
The Economic Theory of Two-Sided Platforms⁸
584/2024, B05, Martin Peitz
Early Life Conditions, Time Preferences, and Savings⁹
583/2024, A03, B05, Effrosyni Adamopoulou, Mattia Colombo, Eleftheria Triviza
Feed for Good? On the Effects of Personalization Algorithms in Social Media Platforms¹⁰
580/2024, B05, Miguel Risco, Manuel Lleonart-Anguix. First version: July 2024
EU Merger Control and Climate Action: The Struggle for the Proper Framework¹¹
576/2024, B05, Jens-Uwe Franck
Geopolitical Risks and Prudential Merger Control¹²
568/2024, B03, B05, Massimo Motta, Volker Nocke, Martin Peitz. Published in Journal of European Competition Law & Practice 15 (2024), 341-348
Biased Recommendations and Differentially Informed Consumers¹³
554/2024, B03, B04, B05, Martin Peitz, Anton Sobolev
Hosting Media Bias: Evidence from the Universe of French Broadcasts, 2002-2020¹⁴
537/2024, B05, Julia Cagé, Moritz Hengel, Nicolas Hervé, Camille Urvoy
Digital Attention Intermediaries¹⁵
520/2024, B05, Martin Peitz. Published in Seoul Journal of Economics 37 (2024), 1-36
Harvesting Ratings¹⁶
509/2024, B05, Johannes Johnen, Robin Ng. First version: February 2024
Governance and Regulation of Platforms¹⁷
480/2023, B05, Martin Peitz
Platform-Enabled Information Disclosure¹⁸
468/2023, B04, B05, Jacopo Gambato, Martin Peitz
Ad Blocking, Whitelisting, and Advertiser Competition¹⁹
448/2023, B03, B04, B05, Martin Peitz, Anton Sobolev, Paul Wegener
Denial of Interoperability and Future First-Party Entry²⁰
447/2023, B05, Massimo Motta, Martin Peitz
The Digital Markets Act and the Whack-A-Mole Challenge²¹
439/2023, B05, Jens-Uwe Franck, Martin Peitz. Published in Common Market Law Review 61 (2024), 299-344
Management Liability for Companies' Antitrust Fines²²
429/2023, B05, Jens-Uwe Franck, Till Seyer. First version: May 2023
Asymmetric Platform Oligopoly²³
428/2023, B05, Martin Peitz, Susumu Sato. First version: May 2023. Second version: July 2023.
How to Apply the Self-Preferencing Prohibition in the DMA²⁴
422/2023, B05, Martin Peitz. Published in Journal of European Competition Law & Practice 14 (2023), 310-315
Network Effects on Information Acquisition by DeGroot Updaters²⁵
420/2023, B05, Miguel Risco. First version: April 2023. Forthcoming in Economic Theory
Market Definition and Three 19A Designations Under German Antitrust Law: Alphabet, Meta, and Amazon²⁶
386/2023, B05, Jens-Uwe Franck, Martin Peitz. Published in Competition Policy International Antitrust Chronicle (2023)
Enforcing Fintech Competition: Some Reflections on Institutional Design²⁷
375/2022, B05, Jens-Uwe Franck
The Law and Economics of AI Liability²⁸
371/2022, B05, Miriam Buiten, Alexandre de Streel, Martin Peitz. Published in Computer Law & Security Review 45 (2023), 105794
Open Markets in the Era of Fintech and Big Tech: Lessons for the Institutional Design of Competition Policy²⁹
367/2022, B05, Jens-Uwe Franck
Market Power of Digital Platforms³⁰
365/2022, B05, Jens-Uwe Franck, Martin Peitz. Published in Oxford Review of Economic Policy 39 (2023), 34-46
Selective Exposure Reduces Voluntary Contributions: Experimental Evidence from the German Internet Panel³¹
340/2022, B05, Federico Innocenti, Linnéa Marie Rohde
Inflated Recommendations³²
336/2022, B03, B04, B05, Martin Peitz, Anton Sobolev. First version: February 2022
Collusion Between Non-differentiated Two-Sided Platforms³³
331/2022, B05, Martin Peitz, Lily Samkharadze. First version: January 2022. Published in Economic Letters 215 (2022), 110506
The Directive on Unfair Trading Practices in the Agri-Food Supply Chain: Regulatory Ambitions and Legal Instruments³⁴
304/2021, B05, Jens-Uwe Franck. Published in Zeitschrift für Europäisches Privatrecht 29 (2021), 843-891
Can Media Pluralism Be Harmful to News Quality?³⁵
298/2021, B05, Federico Innocenti. First version: May 2021
Digital Platforms and the New 19a Tool in the German Competition Act³⁶
297/2021, B05, Jens-Uwe Franck, Martin Peitz. Published in Journal of European Competition Law & Practice, 12: 513-528, 2021
Partial Compatibility in Oligopoly³⁷
278/2021, B05, Federico Innocenti, Domenico Menicucci. Published in Journal of Economic Behavior and Organization, 188: 351-378, 2021
Eating Habits, Food Consumption, and Health: The Role of Early Life Experiences³⁸
276/2021, A03, B05, Effrosyni Adamopoulou, Elisabetta Olivieri, Eleftheria Triviza. First version March 2021
Market Definition in the Platform Economy³⁹
259/2021, B05, Jens-Uwe Franck, Martin Peitz. First version: January 2021. Published in Cambridge Yearbook of European Legal Studies 23 (2021), 91-127
Preparing for the Next Crisis: How to Secure the Supply of Essential Goods and Services⁴⁰
210/2020, B05, Natalia Fabra, Massimo Motta, Martin Peitz. Published as "Learning from electricity markets: How to design a resilience strategy" in Energy Policy, 168, 113116, 2022
Removal of Potential Competitors - A Blind Spot of Merger Policy?⁴¹
208/2020, B05, Massimo Motta, Martin Peitz. Published in Competition Law and Policy Debate, 6: 19-25, 2020
The Tension Between Market Shares and Profit Under Platform Competition⁴²
204/2020, B05, Paul Belleflamme, Martin Peitz, Eric Toulemonde. First version: August 2020. Published in International Journal of Industrial Organization 81 (2022), 102807
What Is ‘Competition Law’? – Measuring EU Member States’ Leeway to Regulate Platform-to-Business Agreements⁴³
202/2020, B05, Jens-Uwe Franck, Nils Stock. Published in Yearbook of European Law 39 (2020), 320-386
The Economics of Decoupling⁴⁴
201/2020, B02, B05, Andre Speit, Paul Voss
Shareholder Votes on Sale⁴⁵
200/2020, B02, B05, Andre Speit, Paul Voss
Network Goods, Price Discrimination, and Two-Sided Platforms⁴⁶
188/2020, B05, Paul Belleflamme, Martin Peitz. First version: June 2020.
Which Role for State Aid and Merger Control During and After the COVID Crisis?⁴⁷
184/2020, B05, Chiara Fumagalli, Massimo Motta, Martin Peitz. Published in Journal of European Competition Law & Practice, 11: 294-301, 2020
State Aid Policies in Response to the COVID-19 Shock: Observations and Guiding Principles⁴⁸
179/2020, B05, Massimo Motta, Martin Peitz. Published in Intereconomics 55 (2020), 219-222
Germany’s ‘Lex Apple Pay’: Payment Services Regulation Overtakes Competition Enforcement⁴⁹
173/2020, B05, Jens-Uwe Franck, Dimitrios Linardatos. First version: May 2020. Published as "Competition Enforcement versus Regulation as Market-Opening Tools: An Application to Banking and Payment Systems" in Journal of Antitrust Enforcement 12 (2024), 148-188
Student Performance and Loss Aversion⁵⁰
150/2020, B05, Heiko Karle, Dirk Engelmann, Martin Peitz. Published in The Scandinavian Journal of Economics 124 (2022), 420-456
Big Tech Mergers⁵¹
147/2020, B05, Massimo Motta, Martin Peitz. First version: January 2020. Published in Information Economics and Policy, 54: 100868 , 2021
Ad Clutter, Time Use, and Media Diversity⁵²
140/2019, B05, Simon P. Anderson, Martin Peitz. First version: December 2019. Published in American Economic Journal: Microeconomics 15 (2023), 227-270
The Competitive Impacts of Exclusivity and Price Transparency in Markets with Digital Platforms⁵³
137/2019, B05, Paul Belleflamme, Martin Peitz. Published as "Digital & Competition" in Concurrences (2020), 2-7
Bidding in Common-Value Auctions with an Uncertain Number of Competitors⁵⁴
136/2019, B04, B05, Stephan Lauermann, Andre Speit. Published in Econometrica 91 (2023), 493-527
Segmentation Versus Agglomeration: Competition Between Platforms with Competitive Sellers⁵⁵
101/2019, B05, Heiko Karle, Martin Peitz, Markus Reisinger. Published in Journal of Political Economy, 128: 2329-2374, 2020
Price Disclosure by Two-sided Platforms⁵⁶
099/2019, B05, Paul Belleflamme, Martin Peitz. Published in International Journal of Industrial Organization, 67, 2019
Optimal Non-Linear Pricing Scheme When Consumers Are Habit Forming⁵⁷
098/2019, B05, Eleftheria Triviza. First version: June 2019
Media See-Saws: Winners and Losers in Platform Markets⁵⁸
089/2019, B05, Simon P. Anderson, Martin Peitz. First version: May 2019. Published in Journal of Economic Theory, 186, 2020
Challenges for EU Merger Control⁵⁹
077/2019, B05, Massimo Motta, Martin Peitz
Ratings, Reviews, Recommendations and the Consumption of Cultural Goods⁶⁰
076/2019, B05, Paul Belleflamme, Martin Peitz. Published as "Ratings, Reviews, and Recommendations" in Handbook of Cultural Economics 3 (2020), 466-473
Rethinking Liability Rules for Online Hosting Platforms⁶¹
074/2019, B05, Miriam Buiten, Alexandre de Streel, Martin Peitz. Published in International Journal of Law and Information Technology, 2020
Distorted Input Ratios in Vertical Relationships⁶²
060/2018, B05, Martin Peitz, Dongsoo Shin. Published in Scandinavian Journal of Economics, 122: 1480-1509, 2020
You Are Judged by the Company You Keep: Reputation Leverage in Vertically Related Markets⁶³
042/2018, B05, Jay Pil Choi, Martin Peitz. Published in International Journal of Industrial Organization, 61: 351-379, 2018
Striking a Balance of Power Between the Court of Justice and the EU Legislature: The Law on Competition Damages Actions as a Paradigm⁶⁴
037/2018, B05, Jens-Uwe Franck. Published in European Law Review, 43: 837-857, 2018
Managing Competition on a Two-Sided Platform⁶⁵
028/2018, B05, Paul Belleflamme, Martin Peitz. Published in Journal of Economics and Management Strategy, 28: 5-22, 2019
A Fresh Look at Zero-Rating⁶⁶
027/2018, B05, Jan Krämer, Martin Peitz. Published in Telecommunications Policy 42, 501-513
Consumer Search with and Without Tracking⁶⁷
021/2018, B05, Marcel Preuss. Published as "Search, Learning, and Tracking" in RAND Journal of Economics 54 (2023), 54-82
Toward a Coherent Policy on Cartel Damages⁶⁸
007/2018, B05, Jens-Uwe Franck, Martin Peitz. Published as "Cartel Effects and Component Makers’ Rights to Damages" in World Competition, 43: 209-240, 2020
Inside the Engine Room of Digital Platforms: Reviews, Ratings, and Recommendations⁶⁹
004/2018, B05, Paul Belleflamme, Martin Peitz. Published in J.J. Ganuza and G. Llobet (eds.), Economic Analysis of the Digital Revolution, Funcas Social and Economic Studies, 5: 215-254, 2018
Platform Competition: Who Benefits from Multihoming?⁷⁰
001/2018, B05, Paul Belleflamme, Martin Peitz. Published in International Journal of Industrial Organization, 64: 1-26, 2019

Project B05: Discussion papers

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