> Amazon is a monopoly on Kindle, which is what the author has issues with.
This makes no sense. Companies all have monopolies on their own products. Apple has monopoly on the iPad, which is a similar competing reading device. Sony has monopoly on the PlayStation. Microsoft has monopoly on Office and Xbox. Are you suggesting that all companies should give up the ownership of all of their products?
There are several competing products to Kindle, like Nook and even iPad (which funnily enough, tried to monopolistically engage in price fixing)