"From a sales angle, however, I’ve been surprised to discover that open access publishing actually seems to increase sales. The Speculative Turn has been a wild success. It crashed Re.Press’s server the night it was released, and has hovered around the 40-60 thousand sales rank on Amazon consistently since it was released a year ago. This is extraordinary for an academic text, especially given that anyone can access it for free. Graham’s Prince of Networks has done similarly well. It’s difficult to yet say how The Democracy of Objects will do in print form, but so far the internet traffic has been very promising."
Again this is an example of the kind of real leading edge socio-economic model transitioning away from capitalism, whereas those that cling to their intellectual property for a profit are miles behind this developmental advance. (Recall this thread, for example.) And if sales above are indicative, they'd actually make more money by giving it away!