who determines what will be printed and how access to information limited with mass production of books?

Question

Publishers determine what they will publish. Their decisions are usually made on the basis of what will earn them a profit. In other words, publishers reject books that they don't believe will sell very well.

A few books are self-published with the author paying for the printing, binding, and distribution. These books, though, aren't generally widely distributed -- so may not even be considered "mass production."

Libraries also determine which books they will buy.