There’s a bit of a difference between a re-packaged cash grab and the continuation of a series, or modern recontextualizing of a story.

We remake Batman like every 10-20 years because we’ve been writing Batman stories since the second world war. Batman is more of a legendary folk hero, an archetype to build stories around, like Paul Bunyan was to early settlers (And the indigenous people’s Glooscap, upon whom he was based.)

And then there’s concepts that keep inspiring more stories that can’t be contained in one film. Alex Garland is an incredibly talented writer of original films, he wrote 28 Days Later and returned to write 28 Years, which is a sequel and not a remake.