Please explain what you mean about "non-portability." You can save your music, out of iTunes in any format you choose. Videos and movies, no. Those ARE digital rights managed because of copyright and rightfully so. . . but they can be watched on any Apple device owned by the user, so exactly WHAT is his problem? If he wants to watch it on his big screen TV, no problem. Want to watch it on his iPad, iPhone, Mac, iPod touch, no problem. But if he wants to give a copy to a friend, he's got a problem. That's illegal and he can't do it. That is NOT portability, that's theft.
I don’t use it. Everything i say about iTunes is second hand. I’ve had a lot.of conversations over the years with people that used it nd hated the grip apple keeps on your usage.