Marvel had a plan and it was apparent as far back as a decade ago. They were going to incorporate their main characters in a way in which they can cross over in each other's franchise. You'd see these connection ...which were building toward the Cinematic Marvel Universe --- as tiny snippets after the credit of each Marvel film. It hooked the audience -- especially the built-in and devout comics fans and made them anticipate it.
Marvel led the way. DC -- or to be precise, movie studio that usually put them out -- saw how successful this was, but failed to set their own presence and direction for their DC universe. Instead, they played catch-up and it showed. The film were hastily put together, were often sloppy, and failed to develop the characters (Even after several sequels for certain Marvel characters, there's still an arc for their development).
This move by Marvel has been influential. It appears that there's an attempt to create two monsters Universe; one pertaining to the literary/ Universal Studio monsters (so far unsuccessful) and the big monsters such as Godzilla and King Kong (watch the very end of Kong Skull Island). The latter looks like they're taking the same methodical approach that Marvel took.