The bill you never see
“Free” is the most expensive word in economics — not because the thing on offer costs nothing to make, but because the price has been . Someone still pays. The interesting question is who, and in what currency.
Comb through the ledger of a typical “free” consumer app and the numbers stop being abstract. One audit put the median user’s spend at roughly forty minutes of attention a day — attention that was, by every ordinary definition, bought and sold. It simply never showed up on a receipt.
Which is why the honest way to read any offer is to ask what it costs in the currency the seller most wants. Sometimes that is money. More often, now, — and attention, unlike money, you can never earn back.
There is no such thing as a free lunch; there is only a lunch whose bill arrives later, itemized in a currency you forgot you were spending.
Where the cost tends to hide
Follow the incentives and the hiding places are usually the same three:
Attention — the minutes the product must hold to sell to someone else.
Data — the record of what you did, worth more in aggregate than any single fee.
Optionality — the future choices you quietly foreclose by staying inside one walled garden.
None of this makes “free” a trick. A trade can be worth it even when the price is strange. The discipline is simply to name the price before you agree to it — and then to notice .