They simply ran out of books to adapt ?

The only good thing that came out of the franchise is Daniel Radcliffe‘s career.
I’m glad the live action Akira never got made. They might get around to it eventually but it’s been decades by now and we’re all better off for it.
I’m also kind of glad Alejandro Jodorowski‘s Dune adaptation never got made. I love both Dune and Jodorowsky and combining the two sounds insane but considering the special effects tech of the day and the tiny budget a Jodorowsky movie would have gotten I see no scenario where this ends up being any good. I think the documentary on the planned movie was way more interesting and inspiring than the actual movie would have been.