Say you're making children's videos like Cocomelon or Bluey in 3D, you don't need all these nice things.
At the end, movies are about the stories, not just pretty graphics.
The great people at Pixar and DreamWorks would be a bit offended. Over the past three or so decades they have pushed every aspect of rendering to its very limits: from water, hair, atmospheric effects, reflections, subsurface scattering, and more. Watching a modern Pixar film is a visual feast. Sure, the stories are also good, but the graphics are mind-bendingly good.
People don't pay 45 eurodollars for IMAX because they like the story.