Maybe I missed it, but what anger are you talking about? The industry's focus on trying to eliminate it, the community's backlash, or the gamers that dislike used games?
ABy anger I mean the general gaming industries intense dislike of it. Used sales seems much more vocalized regarding games then with film, tv, books, comics, and nearly all other forms of media.
If we hit that bull's eye, the rest of the dominoes will fall like a house of cards. Checkmate.