The Fiction Narrative as Product

When I began conceptualizing the novel I am now writing, I first imagined a superb (Indie) bookstore and visualized the shelf on which I was trying to place this book. In other words, this novel is market-driven. Books are written to be read and writing with any other criteria then unit sales in mind makes no sense to the union of pen and paper. I do engage in writing exercises to hone my craft and develop form but always with an eye to saying something worth saying well enough for it to be read and enjoyed.
A generic book is a product in the same sense that a painting is a product. While the category, books by the pound, exists just as the product category, motel art, exists, the defining attributes of vision and talent select certain books for certain shelves in the book market, the universal bookstore.
Unlike some other writers, I appreciate Amazon's business model for the creation and marketing of books as products. They do make mistakes such as treating books as a commodity by lowering unit prices to increase volume of sales but, as it becomes obvious that this is a mistake, they will change their model. Theirs is a pragmatic, heuristic approach to selling more books and, since I want my novel read, I support their approach even when they make mistakes.
I will say that the Amazon search engine, which constitutes the shelves of that bookstore, is mysterious, even enigmatic. In my personal experience, it has behaved brilliantly in presenting certain books of interest to me and in a fairly mediocre fashion at other times. Writing for a search engine is a totally different concept than writing for a physical shelf and I admit that I am struggling to master it.