Businesses partnering with a book publisher?
Yes, and this indeed may be the way of the future as Seth Godin's own Domino Project gradually paves the way for it.
Books and ebooks can be utilized as great conversation sparks and business conversation starters, and this is exactly how the Domino Project is trying to leverage them.
The idea is simple: people do not trust brands that much, but they do trust individual authors and voices. Why not to use a book publication to spark conversations between a brand and its audience?
The brand can buy/distribute the book and get attention and prestige for being the one to bring new original value to its audience, and the book/author combination can attract the type of interest and desire to discuss that brands are seeking so badly in these times.
Read of some illuminating examples of this approach put to use here: http://www.thedominoproject.com/partnerships