No, it's because there usually isn't enough room to have both a soundtrack AND a "show" section, and we all know that Broadway CD's aren't one of the top selling. I really do think that people who get so irritated by the inadvertant use of "soundtrack" are perhaps a little too uptight and should focus their worries on more prominant issues. I see where people like veuve are coming from - but let's be serious. You're talking about an Evita CD, not how to end world hunger. In the end, is it really all that important? If someone says "I love the WICKED soundtrack," you know exactly what they're talking about. Obviously, the correct term is "cast recording," but it's clear what they mean. People don't need to act so uptight and get so angry or annoyed over such a word. And before those criticize others that might use the evil word "soundtrack," they better make sure that their own posts are as damn close to perfection as they can get before being picky about word choice - especially when you know what they're saying to begin with.
"If you are going to do something, do it well. And leave something witchy."
-Charlie Manson