Or because they don't feel like having users bitch and moan at them for support until the end of time.Exactly ! so why one person that have worked on a homebrew decide to give up and don't give the source code or share any beta ?
Because of a problem of speed download he give up and he don't let anyone else try to find a solution ? Lawl !!!
Here's an idea: Go learn how to program, learn how to develop on the WiiU, write your own tool to do what you're asking, then deal with the shitstorm that will inevitably follow because of the shittastic download speeds your application is capable of. Good luck!