I also don't feel like asking this question is crossing the line. If we don't know, we don't know. We've all wondered it. We've all looked at the grosses and thought "Wow, I wonderful how much they need to make a week to survive."
I find it strange that it truly is none of our business and is kept private when they announce weekly how much they made, how many seats were left unsold, the average ticket price, and the percent capacity. It just doesn't make sense. If it's private, it's private.
"If you are going to do something, do it well. And leave something witchy."
-Charlie Manson