The formula of box office hits: in the top 10 of last years highest grossing movies, all of them are produced and distributed by a conglomerate company. This shows how dominating these companies are over the film industry and how easily they can produce high-grossing films.
5 out of the top 10 movies are superhero movies (all of them being apart of the Marvel cinematic universe); the long-existing fanbases for marvel movies allows almost all of their films to perform exceptionally well.