I'm certain that there will indeed be a slate of high-profile rock biopics. Rocketman is due in Summer 2019, and if they get two hits out of two, there will be so many put into development that they will still be coming out years after folks have stopped buying. Strangely, contemporary rock 'n' roll is scarcely marketable at all, but rock 'n' roll rehashes (films, Broadway shows, wheelchair tours, hologram tours ...) couldn't be more lucrative.