Maybe take a moment and examine what did that JSA movie let alone Black Panther, Cap Marvel & Aquaman do that Justice League did NOT. Along with looking at what Into the Spiderverse and even Venom and Deadpool did that JL did not.
All these icons and Cyborg and a guy in a catsuit and Michael B Jordan-who was almost run out of Hollywood over Fantastic Four, a movie with a HATE movement after Brie Larson and the guy from Baywatch account for 3 billion not the film with 5 folks who account for 90% of DC books and tv shows.
And then to have a collection of old FOSSILS in JSA that has NOT had a book in 12 years get a movie and outperform those Icons and Cyborg?
There would be some heads rolling.
I would offer this challenge-what if Static's movie does better then JL? That would be a bigger finger at DC than anything at Marvel.