But if you are destroying the original book in order to scan it, you are not making a 'copy' since you'll still have only one version. You are making a format-shift
On the other hand, there is the education business model. My school uses a curriculum program that has many clunky binders accompanying each story-based unit. I am, as the legally hired and paid for employee of the purchasing school, permitted to copy away for my own use with the enrolled students of said school. I even scanned the binders into PDF for ease of printing, said so on their message boards when several teachers were sharing tips, and had an admin from their company compliment me on my ingenuity and use of 'technology in the classroom.' The catch? Each books costs a thousand bucks
My view for regular books is, if the folks at Big Five want this to be a 'license' (with corresponding powers to them to limit or restrict my use) and not a 'sale' (where I own the book and can do as I please with it, including re-selling and loaning) then they need to charge a rental or license type price and not a full-on hardback price. $2 a book and it expires after a month? Fine. $20 a book and they can decide to remove it from my Fictionwise bookshelf if they don't want to sell it anymore? Not fine at all. And if that's how they are going to play it, they really can't blame people like us for trying to work around it.