It's correct though. Authors donate their work freely. Reviewers work for free. I believe even editorial boards work for free. I'm not sure about that though.

It's correct though. Authors donate their work freely. Reviewers work for free. I believe even editorial boards work for free. I'm not sure about that though. All Elsevier has to do is hassle people for reviews and run a website. Hardly difficult. They only survive because of the insane network effects of journal publishing.