This is because the books are expensive-to-print, full-color volumes with hundreds of images, much like Graham Hancock's Heaven's Mirror with Santha's gorgeous photos. Wow, what a moving book....
Besides, like Kahlil Gibran's view of children, I feel the story came through me -- not from/to me. I only recounted what I'd learned and deserve no profit from divinely inspired insights in fusing diverse sources of information.
Wisely directed charity? Yes, you're right. It's truly the Gnostic way.
Guess it takes one to know one!