E.g., take Blender, Adobe Premiere, Ableton Live, Photoshop, Illustrator, in all of those cases, what you export is the actual real asset (it's the movie, the drawing, the song, etc...).

It's not like that with design and it ends up pushing design apps away from native apps and towards web apps, because at some point someone, usually an engineer has to get in there and figure out all the details of how this actually needs to get built. So if the app only runs on a Mac that's annoying. But that's not an issue with say, Final Cut Pro, where the person editing the movie can just export the movie themselves, they don't need to involve someone that's maybe using a platform that Final Cut Pro doesn't run on.