Penguicon 2018

DC and Marvel are both building Movie and TV ‘verses, and their approaches recall the earlier days of each company. Marvel emphasizes continuity and, as much as possible, keeping everything in one universe. They even appear to be undercutting some characters not under the Disney umbrella. DC creates various universes that do not all cross over, which typifies the approach their comics took prior to the mid-1960s, when many of their characters only sporadically or selectively crossed over (some not at all) and events in one comic had no impact on events in the other. What drives the differing approaches? What are the advantages and disadvantages of each?