Step 0: Wait at least 24 hours before freaking out, and check the facts of the matter first, before writing an outraged tirade that promptly gets edited to private upon being smacked with a Clue Bat by an amused friend. :-P
Step 1: Let the publisher (directly) know we are outraged and offended; give the publisher some suggestions about how this could be made if not right, at least less wrong.
Step 2: Hope the publisher will do so.
Step 3a: If the publisher does so, throw a fucking party.
Step 3b: If the publisher does not do so, carry out the activities of an outraged fandom to the best of our ability. We all know how this song goes.
Step 4: If the publisher continues to hold firm against fandom, commence seducing its authors away from it. Check publisher information on all books before buying. Let the publisher know what books you would have bought had you not been angry with them. Support independent efforts of authors to try group-sponsored publication like dduane is experimenting with. Support your local independent bookseller. Write, unionize, and bring the era of the monolith publisher to a crashing halt.