This trend toward I.P.-based movies has been profound. In 1996, of the top 20 grossing films, nine were live-action movies based on wholly original screenplays. In 2016, just one of the top 20 grossing movies, ‘‘La La Land,’’ fit that bill. Just about everything else was part of the Marvel universe or the DC Comics universe or the ‘‘Harry Potter’’ universe or the ‘‘Star Wars’’ universe or the ‘‘Star Trek’’ universe or the fifth Jason Bourne film or the third ‘‘Kung Fu Panda’’ or a super-high-tech remake of ‘‘Jungle Book.’’ Just outside the top 20, there was a remake of ‘‘Ghostbusters’’ and yet another version of ‘‘Tarzan.’’