If everyone without a modchip will be able to read backups, Nintendo will be ekhm...very angry and will be trying to stop homebrew, homebrew channel, TP hack and so on (thay started to do it, but not that good as they would). Now, if you have a modchip you void the varranty, so if your wii broke, your screwed and you have to practically buy ba new wii, what can refund the games you pirated. A custom IOS that you can uninstall then ...y' know...They will try their best to stop it. They can even do the worst things like bricking machines with IOSxxx, because a customization like this would just shorten lifespan of the Wii, and a few da best titles like "Horzez" would stop coming for Wii, because NO ONE would buy them.