“…The optimum deployment of distribution channels and content genres, referred to as portfolio management, is now a major management priority. This approach to optimizing the combination (portfolio) of a mix of products and businesses will result in the most efficient strategic allocation of management resources (Picard, 2005;Oliver, 2013;Wirtz, Pistoia, & Mory, 2013;Nissen, 2013;Candel, 2014;Lowe & Martin, 2014). PSB management has been described a "less tempting area of study" (Nissen, 2013, p. 69), but nevertheless "a worthy focus for scholarly research" (Glowacki & Jackson, 2014;Nissen, 2013, p. 70).…”