Look, I get the appeal. Finishing a Kubrick film or a Bowie album sounds exciting on paper. But here's the thing that breaks the whole argument: the artist can't consent. They're dead. They can't say "no, that's not what I meant" or "stop, that's terrible."
You're basically taking someone's unfinished work and pretending you know what they wanted. That's not honoring their legacy - that's using their corpse as a puppet. And once you let studios do this, where does it stop? They'll dig up every unfinished sketch, every rough draft, every half-baked idea. It's not art anymore, it's just content production with a dead person's name attached.
Art isn't about finishing things. It's about the choices the artist makes. Take that away, and you've got nothing real.