As recently as 1988, more than 40 percent of theatrical U.S. box office sales were achieved with original stories; that share of the box office fell to 6 percent by 2019. Meanwhile, the establishment and continuation of franchises, which used to occupy about a quarter of the market, has since risen to occupy nearly three-quarters, with other types of adaptations accounting for most of the rest.
Andrew DeWaard, Derivative Media: How Wall Street Devours Culture























