Publishers run two businesses on one dataset. The subscription business wants to convert and retain readers; the advertising business wants to package and monetise them as audiences. The same consent, the same identity graph and the same behavioural data serve both, and the two sides frequently want incompatible things from it.
Consent makes it harder. A publisher depends on advertising revenue that requires consent, while the reading experience suffers from aggressive consent prompting, and the rules keep moving. Getting to a defensible position that funds the business without degrading the product is a live problem for every publisher we speak to.
Underneath both businesses sits one metric that moves everything: the share of readers who are logged in. A known reader can be metered intelligently, retained with a newsletter, sold to an advertiser as a first-party audience and measured across devices. An anonymous one can be monetised contextually and not much else. Raising the logged-in rate is the single programme that serves the subscription side and the advertising side at once, and it is rarely owned by anyone.