Earlier quoted context omitted.
Although reviewership is a useful thing that gets put on CVs, I can't think of a position I've ever seen where "review X papers" a year is part of the job requirement. A more salient point about why it is important to note that peer review is unpaid is that academics, as authors, submit their work---for free---to a journal, where reviewers review it for free, and then the journal turns around and sells the article fo…
This is such an adversarial way to look at it. I see it as a community. We write and share our papers as part of our jobs, we review each others' papers as part of our jobs, we help to run the conference as part of our jobs. Everyone contributes to run the system. Nobody buys articles for $35 a piece. All major universities and companies subscribe to the ACM or whatever your field's organisation is for you. And guess…
Maybe you'd like to take a look at these members of the community, who show they care about the community by refusing to participate in journals for certain publishers: http://thecostofknowledge.com/ It even has a Wikipedia article: https://en.wikipedia.org/w/index.php?title=The_Cost_of_Knowl... And here's an example of one of them: https://www.scottaaronson.com/writings/journal.pdf