According to Grant Morrison, their Superman and The Authority miniseries was written to stop DC from turning the hero into an evil tyrant.
Plans for Aquaman: Earth One are canceled due to writer/artist Francis Manapul parting ways with DC and his busy schedule.
5G is not happening (if it ever was going to) according to Jim Lee who swears DC will move in an organic story-driven path in 2021.
DC publishing is not a big chunk of WarnerMedia revenue at all. Yet The Motley Fool thinks a sale or licensing of assets by AT&T is unlikely.