Nintendo still has a lot to learn regarding its consoles’ online systems, sometimes implementing ideas which end up being a nuisance more than something that benefits players. That’s not the case with something that has been found by a few players posting on the NeoGaf forums: some players will indeed benefit from this issue.
As reported by a thread on NeoGaf, for the way the Wii U eShop works, used Wii U systems come with all the software bought and downloaded by the previous user. The issue is due to the way the Nintendo Network ID works: the ID is tied to a single console and all the purchase history becomes tied to the console in the process. There’s no way for players to move their IDs from one console to another: to do so the console must be sent to Nintendo’s Customer Support, some real troubles for something so simple to do.
Buying an used Wii U console probably means receiving software for free, if the previous user bought some full games, Virtual Console titles or WiiWare games. Nintendo still has to comment about this issue: if not corrected, this could become a big problemfor the japanese company and all publishers could suffer from potential sales loss, even though the used consoles on the market aren’t that many.