A lot of business would go bankrupt. And I’m not talking about adtech, but advertisers. There’s tons of them, from small mom and pop style to big companies that depend on ads to get customers. And no, they aren’t scams.

HN crowd doesn’t accept that, but most people here have no idea about how business works.

Has the cost of customer acquisition objectively dropped over the last twenty years? If so, where can I read about that? If not, why do you believe that?