When the history books are written about this era of Hollywood filmmaking, the entry about cinematic universes will be headlined by the MCU, and then, somewhere further down, there will be a discussion of the biggest crossover failure, Universal’s Dark Universe. Originally meant to compete with Marvel, the studio’s attempt to reboot the various Universal Monsters in one cohesive continuity bombed before it really took off thanks to “The Mummy” reboot starring Tom Cruise.