> (and to an extent still is - for now)
Upon reflection, I think that this is also a significant aspect of one major part of the problem today.
In the general case, yes: retail products, for instance, are still subject to market forces such that the price you pay bears some reasonable resemblance to what society considers the value of the product.
But what about ad-supported services? The people consuming the services are not, in fact, paying with money. They have no way of gauging how much the services cost, nor how much they personally are giving up in terms of personal data to indirectly pay that cost.
The personal data sector of the economy is, I believe, a perfect example of a place where Goodhart's Law has run rampant, with the only measures available being "how many users" and "how much annual recurring revenue", and both of these being hopelessly complicated—the former to determine just what is a user, and the latter to determine how the value of the service to its users actually translates into profit.
Not sure how coherent this is, but it seems very relevant.