The film and television giant will turn its cable networks, including CNN and TNT, into one company and its streaming and studios business into another.

Four years ago, David Zaslav clinched a debt-heavy deal to merge cable mainstay Discovery Inc. — which he’d run since 2006 — with what was then called WarnerMedia. The story he told investors was that the two entities’ diverse array of media assets “are better and more valuable together.” He doesn’t believe that anymore.

NEW YORK (AP) — Warner Bros. Discovery will split into two public companies by next year, calving off cable operations from its streaming service as the number of people “cutting the cord” brings with it a sustained upheaval in the entertainment industry.