You've got to wonder if the publishers ever actually listen to the consumers.
One recurring theme here has been the lack of space people have in their homes. I would think people who are "space challenged" (which seems to me to be more the case than not) would be more likely to wait until the paperback version is released even though they would love to buy the hardcover. The other point this and other similar threads bring out is that once someone gets hooked on ereading they are less likely to return to paper reading if it can at all be avoided. Even to the point of foregoing hardcover purchases in favor of waiting for the digital edition.