Explanation 1: Imagine writing a lengthy blog post, article or something similar - and actually getting paid for it. That's what Amazon is trying here. By comin

Explanation 1: Imagine writing a lengthy blog post, article or something similar - and actually getting paid for it. That's what Amazon is trying here. By coming from a different angle, "books", where we have a traditional readiness to pay, Amazon is trying to create a pay-per-article business model. Explanation 2: a Book needs to have a certain minimum length (80 pages or so). A magazine article has a certain maximum length (20 pages or so). Inbetween, there wasn't a market for selling something, so far. That's what Amazon is trying. Explanation 3: Most business books actually have a few good core ideas, plus a lot of fluff. The fluff is to get at a minimum length and be at a position where you can actually sell "a thing" (book). It's so widespread that several companies like getabstract started selling just the core stuff. With the core stuff, Amazon gets nothing. This is a ploy by Amazon to get some of this business.