This is a suggestion below.
And I only can see above.
As the makers want to exert more control and well, sorry for the discontinuous post, the problem is pretty big.
That is, if a book/video/sound is licensed in some country it can't be sold in the store in another country and the penalties are pretty stiff if you allowed some free speech video loose in a Anihc country. So they've made it hard to change on purpose and don't want to make it easy.
So there's the rub. If you allowed such changes then installed apps, videos and more would have to be gone over to see if there is any license issue.
-> And imagine the responses if such causes content the user installed to vanish.