Tools and workflows matter, especially if they allow artists to work faster and more efficiently. But studios generally cannot decide on a new workflow in the middle of full on production. There’s reason why PBR, Substance Painter/Designer, photogrammetry, etc, were so quickly adopted. They are time savers, makes the artist job less tedious, and they make everything look better.
But yes, studios do often get stuck working with the same engine and editor because it works, and hundreds of people have a streamlined workflow using the existing editor.