Let me set up a hypothetical situation here: I'm a subject matter expert. You want me to review this paper that was submitted, to see if it is up to the standards of your publication. It is a dense piece, at the edges of innovation in my field, so it is going to take some serious brain power and time for me to review the paper, assess its findings, and then provide you with my official recommendation/feedback. Ok. What are you going to pay me for this service? For my expertise? For my decades of schooling and experience that have made me a subject matter expert in my field? My Question: In the world where "information wants to be free", and it is trivial to share any piece of data with any other person in the world, who pays for the highly specialized and skilled service above? Where does that money come from?