"Well, the company is doing well, but since the economy sucks and unemployment is at 8% the company feels like we should be fortunate to have jobs and thus doesn't feel like they will lose anyone over salary."
It should be noted that, from 2006 until I finally got out in 2012 I saw two people leave for outside opportunities, out of a program that had over 300 people. More people retired than quit. Maybe management just had them that well pegged.