unions

Delaying Dune 2 means one less weekend for another movie next year. Sure they could release multiple movies in the same weekend, hope for a Barbieheimer type thing to happen again, but it seems more likely that's something like that will decrease revenue.

Not having actors or writers creates a bottleneck. Yeah they can do post production on the stuff they've shot already. But nothing new is coming down the pipeline. Are you saying they'll do post at the same time they're shooting after the strike ends?

Warner Bros are expecting 10.5-11 billion in revenue

If money is nothing to them then why don't they simply pay the writers and actors more? The point is the money they're losing is more than the money they'd have to pay out.