There’s obviously a way the studio could continue the story of Doc Brown, the McFlys, the Tannens and their relationship with the past, present and future, but Robert Zemekis and Bob Gale wrote into their contracts that they would have a say during their lifetimes. And when you think about it, Back to the Future has been such a landmark film to Hollywood that many movies have borrowed from it or referenced it throughout the years in fresh ways. Just look at the time travel plot line in Avengers: Endgame, the highest-grossing movie ever!
