“…A plethora of scholars has looked at the effects of increased concentration, changing market structures and/or digital developments in media markets on content diversity. This has been the case for both legacy media such as radio (Compaine and Smith, 2001;Hrovatin and Mencej, 2016;Jeziorski, 2014;Sweeting, 2010), the movie sector (Kawashima, 2011;Park, 2011), television (Adilov and Martin, 2014;Mwangi, 2015;Rennhoff and Wilbur, 2014) and print (Beckers et al, 2017;Björkroth and Grönlund, 2014;Horwitz, 2005;Micó et al, 2009;Ohlsson, 2012;Ots, 2012) and, more recently, for so-called 'new media' such as online news (Cage et al, 2015;Carpenter, 2010;Faustino, 2013;Redden and Witschge, 2010;Smyrnaios et al, 2010;Winseck, 2008) and social media (Bozdag and van de Poel, 2013).…”