Academic books that get to be re-produced as new editions--a significant indicator of a successful book--are the ones that tend to receive percentage increments in royalty clauses through new contracts. It hardly needs to be explained that a publisher will not waste time and other resources re-producing a book whose first edition did not fare well in the market.
Another piece of news about academic publishing is that typically, authors (including authors of fictional works) get nothing (did you hear that?) from third-party re-sale of their books in what is commonly referred to as a "used books market." Royalties to book authors are based upon sales of original copies of their books. Any income from the re-sales of that same book (and the internet has made the re-sale of books a convenient, widespread and much sought-after option for students) never gets to either the original publisher or to the author. In fact, the vendors of “used books” don’t even exercise the courtesy of notifying the authors that their books are being re-sold. Not even a thank-you note is offered!
After reading this piece, would you still want to venture into the world of academic book publishing, if you don't have to do so?