But then, it's not a physical thing. When the download system and the hard drive goes, it's gone forever. The Gamecube game is forever as long as it's taken care of.
@TheBronyHeart - It came out around 11 years ago or something like that, so paying that much for an 11 year old game is a bit ridiculous. Nintendo already added Majora's Mask and Ocarina of Time, so it wouldn't hurt to add Wind Waker.