Originally Posted by
Endsong
I mean, I don't think that his time as Scarlet Spider is over or long over at all. He died and hasn't been seen since, and his shelf life back then was actually comparatively young. From at least a marketing perspective Marvel probably feels like they can best capitalize on Ben as Scarlet Spider, as opposed to pulling another Miles Morales and having a third Spider-Man roaming around.
They could have feasibly given him a new name but to be honest that would have felt disingenuous.