The Relevance of Supply-Side Substitutability for ‘Big Data’

Forthcoming in Concurrences

10 Pages Posted: 16 Oct 2018

See all articles by Georg Clemens

Georg Clemens

Compass Lexecon

Mutlu Özcan

Ruhr University of Bochum

Date Written: September 24, 2018


This paper emphasizes the importance of including supply-side substitution when assessing mergers in data-driven markets. A review of three merger decisions involving big data giants such as Facebook and Google reveals that competition authorities have so far neglected important aspects of data-driven markets such as a simplified supply-side substitutability. Consequently the ability to contest markets which are subject to digitalization has not been evaluated properly. We argue that competition authorities not only need to consider the possibility of supply-side substitution but should also consider the peculiarities of big data if they are to correctly assess competition in data-driven markets.

Keywords: Big Data, Antitrust, Competition Policy

JEL Classification: K21, L44, L86

Suggested Citation

Clemens, Georg and Özcan, Mutlu, The Relevance of Supply-Side Substitutability for ‘Big Data’ (September 24, 2018). Forthcoming in Concurrences. Available at SSRN: or

Georg Clemens (Contact Author)

Compass Lexecon ( email )

23 Square de Meeûs
Brussels, 1000

Mutlu Özcan

Ruhr University of Bochum ( email )

Bochum, 44780

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