This presentation by Annabelle Gawer from the University of Surrey was made during the discussion on "Big Data: Bringing competition policy to the digital era" held during the 126th meeting of the OECD Competition Committee on 29 November 2016. More papers and presentations on the topic can be found out at www.oecd.org/daf/competition/big-data-bringing-competition-policy-to-the-digital-era.htm