I think a lot of it also has to do with the secret identities. They don't just own Superman and Batman, they own Clark Kent and Bruce Wayne. And this...
The only way I see that working, if this is really about copyright, is to change the secret identities. Clark Kent and Bruce Wayne are the identities...
According to Israel both US and UK used jets to intercept and destroy drones, etc or the damage would have been far worse. So it looks probable both...