It won't because you have had a TON of stuff in the past that already proved that.
Static proved that.
The CW shows proved that.
The non Batman cartoons proved that.
Folks who dressed up as someone NOT from the Batman family proved that.
The writing has been on the wall for years-DC chooses to NOT pay attention.
Because they are pandering to Batman fans and stores that act like any book not starring him (especially those of color or LGBTQ) have no business being made.
Dc has to understand variety is not 50 different versions of Batman. Like you said look at all the folks winning fans over OUTSIDE of comics. Why keep wasting that shot with excuses of "it won't help comic book sales".
All these Batman books are not helping. It's not helping Doom Patrol or New Age Heroes or Hal Jordan or Justice League. It only helps Batman.