Hollywood has had a big problem with budgets for years especially the WB...
Remember when Superman Returns somehow ended up having a budget of $270 million

and Green Lantern ended up being a $200 million CGI bloated movie. During the DCEU if memory serves, MoS was originally meant to have a budget of around $175 million when greenlit and then $200 million but ended up costing $225 million. Justice League ended up at $300 million because of costly reshoots and they cut so much of the film to bits, just how much did they waste in the end. I even have to wonder did Batman v Superman really need to cost $250 million? Man of Steel seem to look more expensive and had more big action pieces so where did the money exactly go?