Oh I get to bump this thread with sadness in my heart.
For the most part, I've been able to avoid this whole mess because most of the games that do it aren't that important to me.
But just found out that Batman: Arkham City is doing it. And doing it by restricting access to certain single player portion of the game (the Catwoman missions)
http://www.eurogamer.net/articles/20...locks-catwoman