I often saw people from Modo or sometimes from Lightwave using Blender for animation or fluid simulation. After that they transfered the animation in a quite new format (point oven, *.mdd). This is actually some vertex animation format.
So they can transfer it to another application and render the animated content. They cannot change it anymore since it is baked into vertex animation. But they can render it everywhere.

Something similar applies when you bake bone or ik animation into vertex animation for game engines.