“…Several empirical studies have explored the sales impacts of intellectual property rights, particularly in the context of copyrighted products that are subsequently pirated, including music (Adermon and Liang, 2014;Bhattacharjee et al, 2007;Seung-Hyun Hong, 2013;Leung, 2015;Liebowitz, 2008;Oberholzer-Gee and Strumpf, 2007;Rob and Waldfogel, 2006;Savelkoul, 2020;Waldfogel, 2010;Zentner, 2006;Zhang, 2018), movies (Bai andWaldfogel, 2012;Danaher et al, 2010;Danaher and Smith, 2014;Liebowitz and Zentner, 2012;Peukert et al, 2017;, Yue, 2020), books (Hardy et al, 2014), comics (Tanaka, 2019, and computer software (Leung, 2013). Danaher et al (2014) provides a survey of common methodologies and results in this literature.…”