Why did Black Ops 4 not have a campaign?

Why did Black Ops 4 not have a campaign? Treyarch decided to chase the battle royale craze instead Adding a new major component to the Black Ops 4 might be another reason why Treyarch decided to ditch the campaign mode, choosing instead to focus its resources on getting its take on battle royale right.

Treyarch decided to chase the battle royale craze instead

Adding a new major component to the Black Ops 4 might be another reason why Treyarch decided to ditch the campaign mode, choosing instead to focus its resources on getting its take on battle royale right.