They don't want to "build," they want their films to reflect the idea that Jesus Christ is coming back in our lifetimes, that Christianity and Islam are in a forever war in the Holy Land until then, and that the Republican Party is the avatar of Jesus Christ in this battle. (See: Angel Studios etc)
Skydance is free to reboot all of DC Studios, but there's a cost with clearing away franchises that appear to be on the upswing.