I know that some portion of profits from the game, even on Steam, will go to them because they funded and published it. But after the exclusivity expires I'd expect Remedy Entertainment will probably have the standard 70/30 split with valve and whatever Epic see from that sale will be a smaller percentage. I love Remedy and how they practice their craft and art.
Economic semantics aside, yes. I hate Epic so much I'll pay them again not to have to use it any longer.