The original 3 weren’t owned by Marvel’s movie group (because it didn’t exist yet). The new set is entirely under Marvel. Because of Hollywood weirdness Marvel would have to get clearance from Sony to continue that story. So it’s reboot time, this will also give them a chance to fold it into the Marvel movie universe they’re making.
So Sam Hamm who never saw his bonus from Tim Burton’s first Batman film (at least in its theatrical run because that film was “did not show a profit” on paper) got money on all of the subsequent films or at least until the reboot?
Screenwriters are credited with “creating the characters” of a book even when they are simply adapting another’s text. Which is why the Terry Gilliam version of Fear & Loathing In Las Vegas has to credit people who did not contribute to the film script that was brought to the screen (originally to be directed by Alex Cox if I recall).
I don’t care who is doing Hollywood’s bogus accounting and credit assignments. As a consumer I have zero interest in seeing another origin story arch less than a decade after the initial series began (and the shot of the WTC in the original teaser trailer was pulled just after 9-11-2001).
400 comic book stories and they can only tell the same 3 issues.