Here is an editorial from today's L.A. Times, entitled Portrait of the Old Man as a Copyright Miser: How a Lawsuit About Some Old Books and Letters Sheds Light on 21st Century I.P. Madness.
To quote Tim Cavanaugh, its author:
"New works alter, and deepen, our understanding of their sources. This is something for copyright holders to keep in mind in the era of infinite mashups and YouTube parodies. The love of a creative work is like any other kind of love: If you try too hard to control it, it can only die."
As one of Shloss's very proud lawyers, I couldn't have said it better myself.