I don't really know how DLC works, but if I was making DLC for a videogame, instead of having be downloaded directly on the console from the internet, I would make sure it was a decent length and sell it as a disc in stores which you download the content from on to the console. This way if something happens to the console and its memory gets wiped, you won't have to buy the DLC all over again because you have a hard copy to download from.