Responses To Market Power

Question A:

Constraints on the anti-competitive behavior of dominant firms in the digital economy can in principle be effectively implemented using the existing tools of competition policy and antitrust enforcement.

Responses

© 2025. Kent A. Clark Center for Global Markets.
26%
12%
0%
12%
38%
12%
0%

Responses weighted by each expert's confidence

© 2025. Kent A. Clark Center for Global Markets.
0%
25%
51%
24%
0%

Question B:

The effectiveness of existing antitrust regimes in constraining anti-competitive behavior is substantially limited by the inadequacy of the resources available to competition and regulatory agencies relative to the dominant firms of the digital economy.

Responses

© 2025. Kent A. Clark Center for Global Markets.
26%
4%
0%
0%
20%
40%
10%

Responses weighted by each expert's confidence

© 2025. Kent A. Clark Center for Global Markets.
0%
0%
26%
57%
17%

Question C:

Constraints on the anti-competitive behavior of dominant firms in the digital economy would be more effectively implemented than at present with ex-ante regulation such as Europe's Digital Markets Act and other forms of public utility regulation.

Details on Digital Markets Act here: https://digital-markets-act.ec.europa.eu/index_en

Responses

© 2025. Kent A. Clark Center for Global Markets.
26%
16%
0%
2%
22%
32%
2%

Responses weighted by each expert's confidence

© 2025. Kent A. Clark Center for Global Markets.
0%
5%
32%
57%
6%

Question A Participant Responses

Participant
University
Vote
Confidence
Bio/Vote History
Allen
Franklin Allen
Imperial College London
Uncertain
5
Bio/Vote History
There doesn't seem to be much evidence that this is the case. We will see how implementing existing policies works in practice.
Antras
Pol Antras
Harvard
Uncertain
5
Bio/Vote History
Bénassy-Quéré
Agnès Bénassy-Quéré
Paris School of Economics
Uncertain
1
Bio/Vote History
Blanchard
Olivier Blanchard
Peterson Institute
No Opinion
Bio/Vote History
Bloom
Nicholas Bloom
Stanford Did Not Answer Bio/Vote History
Blundell
Richard William Blundell
University College London
Uncertain
5
Bio/Vote History
Botticini
Maristella Botticini
Bocconi
Uncertain
7
Bio/Vote History
Carletti
Elena Carletti
Bocconi
Uncertain
4
Bio/Vote History
Danthine
Jean-Pierre Danthine
Paris School of Economics
Uncertain
3
Bio/Vote History
De Grauwe
Paul De Grauwe
LSE
Uncertain
6
Bio/Vote History
Eeckhout
Jan Eeckhout
UPF Barcelona
Agree
9
Bio/Vote History
Fehr
Ernst Fehr
Universität Zurich Did Not Answer Bio/Vote History
Freixas
Xavier Freixas
Barcelona GSE Did Not Answer Bio/Vote History
Fuchs-Schündeln
Nicola Fuchs-Schündeln
Goethe-Universität Frankfurt
Uncertain
3
Bio/Vote History
Galí
Jordi Galí
Barcelona GSE
No Opinion
Bio/Vote History
Garicano
Luis Garicano
LSE Did Not Answer Bio/Vote History
Gorodnichenko
Yuriy Gorodnichenko
Berkeley Did Not Answer Bio/Vote History
Griffith
Rachel Griffith
University of Manchester
No Opinion
Bio/Vote History
Guerrieri
Veronica Guerrieri
Chicago Booth
Agree
7
Bio/Vote History
Guiso
Luigi Guiso
Einaudi Institute for Economics and Finance
Agree
5
Bio/Vote History
Guriev
Sergei Guriev
London Business School
Disagree
8
Bio/Vote History
Honohan
Patrick Honohan
Trinity College Dublin
Uncertain
1
Bio/Vote History
Javorcik
Beata Javorcik
University of Oxford
Uncertain
1
Bio/Vote History
Kőszegi
Botond Kőszegi
Central European University Did Not Answer Bio/Vote History
Krahnen
Jan Pieter Krahnen
Goethe University Frankfurt
Agree
3
Bio/Vote History
In particular transparency and easy and common access to data is probably a way to enhance competition.
La Ferrara
Eliana La Ferrara
Harvard Kennedy Did Not Answer Bio/Vote History
Leuz
Christian Leuz
Chicago Booth
No Opinion
Bio/Vote History
Mayer
Thierry Mayer
Sciences-Po Did Not Answer Bio/Vote History
Meghir
Costas Meghir
Yale
Disagree
6
Bio/Vote History
Pagano
Marco Pagano
Università di Napoli Federico II
Uncertain
3
Bio/Vote History
Pastor
Lubos Pastor
Chicago Booth
No Opinion
Bio/Vote History
Persson
Torsten Persson
Stockholm University Did Not Answer Bio/Vote History
Pissarides
Christopher Pissarides
London School of Economics and Political Science Did Not Answer Bio/Vote History
Portes
Richard Portes
London Business School
Disagree
6
Bio/Vote History
Prendergast
Canice Prendergast
Chicago Booth
Uncertain
8
Bio/Vote History
Propper
Carol Propper
Imperial College London
No Opinion
Bio/Vote History
Rasul
Imran Rasul
University College London
Uncertain
6
Bio/Vote History
Reichlin
Lucrezia Reichlin
London Business School
Disagree
4
Bio/Vote History
Reis
Ricardo Reis
London School of Economics
Uncertain
7
Bio/Vote History
New attempts at getting market power will emerge; new tools will respond. It is a dynamic game.
Repullo
Rafael Repullo
CEMFI
Uncertain
4
Bio/Vote History
Rey
Hélène Rey
London Business School Did Not Answer Bio/Vote History
Schoar
Antoinette Schoar
MIT
Agree
6
Bio/Vote History
Storesletten
Kjetil Storesletten
University of Minnesota Did Not Answer Bio/Vote History
Sturm
Daniel Sturm
London School of Economics
Uncertain
3
Bio/Vote History
Van der Ploeg
Rick Van der Ploeg
Oxford
Disagree
6
Bio/Vote History
Van Reenen
John Van Reenen
LSE
Disagree
9
Bio/Vote History
Basic principle of welfare is right, but need to strengthen anti-trust regime to give greater power to regulators.
-see background information here
Vickers
John Vickers
Oxford Did Not Answer Bio/Vote History
Voth
Hans-Joachim Voth
University of Zurich
Agree
8
Bio/Vote History
Whelan
Karl Whelan
University College Dublin
Uncertain
5
Bio/Vote History
Wyplosz
Charles Wyplosz
The Graduate Institute Geneva
Uncertain
2
Bio/Vote History

Question B Participant Responses

Participant
University
Vote
Confidence
Bio/Vote History
Allen
Franklin Allen
Imperial College London
Uncertain
5
Bio/Vote History
Although the resources the government typically expends are not as large as the companies, they do often have talented people.
Antras
Pol Antras
Harvard
Strongly Agree
6
Bio/Vote History
Bénassy-Quéré
Agnès Bénassy-Quéré
Paris School of Economics
Agree
5
Bio/Vote History
Blanchard
Olivier Blanchard
Peterson Institute
Agree
6
Bio/Vote History
Bloom
Nicholas Bloom
Stanford Did Not Answer Bio/Vote History
Blundell
Richard William Blundell
University College London
Uncertain
5
Bio/Vote History
Botticini
Maristella Botticini
Bocconi
Uncertain
7
Bio/Vote History
Carletti
Elena Carletti
Bocconi
Uncertain
3
Bio/Vote History
Danthine
Jean-Pierre Danthine
Paris School of Economics
Agree
3
Bio/Vote History
De Grauwe
Paul De Grauwe
LSE
Agree
7
Bio/Vote History
Eeckhout
Jan Eeckhout
UPF Barcelona
Strongly Agree
9
Bio/Vote History
Fehr
Ernst Fehr
Universität Zurich Did Not Answer Bio/Vote History
Freixas
Xavier Freixas
Barcelona GSE Did Not Answer Bio/Vote History
Fuchs-Schündeln
Nicola Fuchs-Schündeln
Goethe-Universität Frankfurt
Uncertain
3
Bio/Vote History
Galí
Jordi Galí
Barcelona GSE
Agree
5
Bio/Vote History
Garicano
Luis Garicano
LSE Did Not Answer Bio/Vote History
Gorodnichenko
Yuriy Gorodnichenko
Berkeley Did Not Answer Bio/Vote History
Griffith
Rachel Griffith
University of Manchester
No Opinion
Bio/Vote History
Guerrieri
Veronica Guerrieri
Chicago Booth
Uncertain
7
Bio/Vote History
Guiso
Luigi Guiso
Einaudi Institute for Economics and Finance
Uncertain
5
Bio/Vote History
Guriev
Sergei Guriev
London Business School
Agree
8
Bio/Vote History
Honohan
Patrick Honohan
Trinity College Dublin
Agree
1
Bio/Vote History
Javorcik
Beata Javorcik
University of Oxford
Agree
8
Bio/Vote History
Kőszegi
Botond Kőszegi
Central European University Did Not Answer Bio/Vote History
Krahnen
Jan Pieter Krahnen
Goethe University Frankfurt
Uncertain
4
Bio/Vote History
I don't know enough on available resources for anti-trust agencies to give a proper assessment.
La Ferrara
Eliana La Ferrara
Harvard Kennedy Did Not Answer Bio/Vote History
Leuz
Christian Leuz
Chicago Booth
Agree
3
Bio/Vote History
Mayer
Thierry Mayer
Sciences-Po Did Not Answer Bio/Vote History
Meghir
Costas Meghir
Yale
Agree
8
Bio/Vote History
Pagano
Marco Pagano
Università di Napoli Federico II
Agree
5
Bio/Vote History
Pastor
Lubos Pastor
Chicago Booth
No Opinion
Bio/Vote History
Persson
Torsten Persson
Stockholm University Did Not Answer Bio/Vote History
Pissarides
Christopher Pissarides
London School of Economics and Political Science Did Not Answer Bio/Vote History
Portes
Richard Portes
London Business School
Strongly Agree
6
Bio/Vote History
Prendergast
Canice Prendergast
Chicago Booth
Strongly Agree
8
Bio/Vote History
Propper
Carol Propper
Imperial College London
Agree
5
Bio/Vote History
Rasul
Imran Rasul
University College London
Agree
8
Bio/Vote History
Reichlin
Lucrezia Reichlin
London Business School
Agree
3
Bio/Vote History
Reis
Ricardo Reis
London School of Economics
Uncertain
5
Bio/Vote History
Unclear that lack of resources is the constraint with the highest Lagrange multiplier.
Repullo
Rafael Repullo
CEMFI
Strongly Agree
4
Bio/Vote History
Rey
Hélène Rey
London Business School Did Not Answer Bio/Vote History
Schoar
Antoinette Schoar
MIT
Agree
7
Bio/Vote History
Storesletten
Kjetil Storesletten
University of Minnesota Did Not Answer Bio/Vote History
Sturm
Daniel Sturm
London School of Economics
Agree
6
Bio/Vote History
Van der Ploeg
Rick Van der Ploeg
Oxford
Agree
6
Bio/Vote History
Van Reenen
John Van Reenen
LSE
Agree
8
Bio/Vote History
Vickers
John Vickers
Oxford Did Not Answer Bio/Vote History
Voth
Hans-Joachim Voth
University of Zurich
Uncertain
6
Bio/Vote History
Whelan
Karl Whelan
University College Dublin
Agree
5
Bio/Vote History
Wyplosz
Charles Wyplosz
The Graduate Institute Geneva
Agree
2
Bio/Vote History

Question C Participant Responses

Participant
University
Vote
Confidence
Bio/Vote History
Allen
Franklin Allen
Imperial College London
Uncertain
5
Bio/Vote History
Maybe, but again we will have to see how things work in practice.
Antras
Pol Antras
Harvard
Agree
6
Bio/Vote History
Bénassy-Quéré
Agnès Bénassy-Quéré
Paris School of Economics
Agree
5
Bio/Vote History
Blanchard
Olivier Blanchard
Peterson Institute
No Opinion
Bio/Vote History
Bloom
Nicholas Bloom
Stanford Did Not Answer Bio/Vote History
Blundell
Richard William Blundell
University College London
Uncertain
5
Bio/Vote History
Botticini
Maristella Botticini
Bocconi
Agree
7
Bio/Vote History
Carletti
Elena Carletti
Bocconi
Uncertain
3
Bio/Vote History
Danthine
Jean-Pierre Danthine
Paris School of Economics
Agree
3
Bio/Vote History
De Grauwe
Paul De Grauwe
LSE
Uncertain
5
Bio/Vote History
Eeckhout
Jan Eeckhout
UPF Barcelona
Strongly Agree
9
Bio/Vote History
Fehr
Ernst Fehr
Universität Zurich Did Not Answer Bio/Vote History
Freixas
Xavier Freixas
Barcelona GSE Did Not Answer Bio/Vote History
Fuchs-Schündeln
Nicola Fuchs-Schündeln
Goethe-Universität Frankfurt
Uncertain
2
Bio/Vote History
Galí
Jordi Galí
Barcelona GSE
No Opinion
Bio/Vote History
Garicano
Luis Garicano
LSE Did Not Answer Bio/Vote History
Gorodnichenko
Yuriy Gorodnichenko
Berkeley Did Not Answer Bio/Vote History
Griffith
Rachel Griffith
University of Manchester
No Opinion
Bio/Vote History
Guerrieri
Veronica Guerrieri
Chicago Booth
Uncertain
5
Bio/Vote History
Guiso
Luigi Guiso
Einaudi Institute for Economics and Finance
Agree
6
Bio/Vote History
Guriev
Sergei Guriev
London Business School
Agree
8
Bio/Vote History
Honohan
Patrick Honohan
Trinity College Dublin
Agree
1
Bio/Vote History
Javorcik
Beata Javorcik
University of Oxford
Agree
6
Bio/Vote History
Kőszegi
Botond Kőszegi
Central European University Did Not Answer Bio/Vote History
Krahnen
Jan Pieter Krahnen
Goethe University Frankfurt
Agree
4
Bio/Vote History
The effectiveness of "Ordnungspolitik", i.e. setting behavioral and legal norms ex-ante, has been a successful strategy in many other markets with a high innovation potential.
La Ferrara
Eliana La Ferrara
Harvard Kennedy Did Not Answer Bio/Vote History
Leuz
Christian Leuz
Chicago Booth
No Opinion
Bio/Vote History
Mayer
Thierry Mayer
Sciences-Po Did Not Answer Bio/Vote History
Meghir
Costas Meghir
Yale
Uncertain
6
Bio/Vote History
Pagano
Marco Pagano
Università di Napoli Federico II
Uncertain
1
Bio/Vote History
Pastor
Lubos Pastor
Chicago Booth
No Opinion
Bio/Vote History
Persson
Torsten Persson
Stockholm University Did Not Answer Bio/Vote History
Pissarides
Christopher Pissarides
London School of Economics and Political Science Did Not Answer Bio/Vote History
Portes
Richard Portes
London Business School
Agree
5
Bio/Vote History
Prendergast
Canice Prendergast
Chicago Booth
Agree
8
Bio/Vote History
Propper
Carol Propper
Imperial College London
Uncertain
3
Bio/Vote History
Rasul
Imran Rasul
University College London
Uncertain
6
Bio/Vote History
Reichlin
Lucrezia Reichlin
London Business School
Agree
3
Bio/Vote History
Reis
Ricardo Reis
London School of Economics
Uncertain
5
Bio/Vote History
Repullo
Rafael Repullo
CEMFI
No Opinion
Bio/Vote History
Rey
Hélène Rey
London Business School Did Not Answer Bio/Vote History
Schoar
Antoinette Schoar
MIT
No Opinion
Bio/Vote History
Storesletten
Kjetil Storesletten
University of Minnesota Did Not Answer Bio/Vote History
Sturm
Daniel Sturm
London School of Economics
Agree
4
Bio/Vote History
Van der Ploeg
Rick Van der Ploeg
Oxford
Agree
6
Bio/Vote History
Van Reenen
John Van Reenen
LSE
Agree
8
Bio/Vote History
Vickers
John Vickers
Oxford Did Not Answer Bio/Vote History
Voth
Hans-Joachim Voth
University of Zurich
Disagree
7
Bio/Vote History
Whelan
Karl Whelan
University College Dublin
No Opinion
Bio/Vote History
Wyplosz
Charles Wyplosz
The Graduate Institute Geneva
Agree
2
Bio/Vote History