Food exclusives aren’t that much a thing. Sure, I can’t buy Good & Gather or Up & Up (Target brands) at Walmart, but Up & Up napkins work just as well as Great Value (Walmart) napkins. An Epic exclusive requires the Epic Store. Maybe for things like flashlight apps or Flappy Bird clones you’d be easily able to find a version on your favorite store, but AAA games are different. For example, if GTA VI (whenever it comes out) is an Epic exclusive, I’m not finding a GTA VI copy of the same caliber on Steam.