[E]very day, in bookstores all over the world, buyers make decisions about the books they want to buy. At the same time, they make decisions about the books they want to exclude.
The retail stores these buyers represent also make decisions about the books they plan to feature, whether in the front window, at checkout or as cover-out books promoted on shelves within the store. By extension, they make companion decisions about the books that they will not promote.
Often enough, decisions about the books that are promoted is a function of marketing dollars: how much a publisher is willing to pay to get access to the front window or the checkout aisle. There’s nothing wrong with that; it is well-documented and widely understood by people who work in trade publishing, though the general public may not fully grasp the system.
–Brian O’Leary on decisions.