Of course they will. There’s a new Batman cartoon coming made by Timm, The Batman II is coming in 2025, The Brave and The Bold is coming at some point after that, Injustice 3 with its Batwank will be out in the near future, and we’ll probably see a new Batman solo game after Gotham Knight and Suicide Squad: KTJL flop. That’s the nice thing about being a Batman or a Spider-Man fan - no matter how bad the comics get there’s always alternatives, and their constant adaptions are creating an endless amount of new fans.
Next up is a freaking Joker story and Batman fanboys never get tired of those so I expect the sales to skyrocket again.