The identity squeeze

Apple's WebKit post does not just block cookies; it declares the entire post-cookie identity stack, the hashed-email ID graphs that UID2, RampID and ID5 built to replace them, to be tracking, and cuts it off at the network level before consent is asked. That is the endpoint of a five-year bet the sell side made: that first-party email would become the durable replacement for the cookie. The same day, IAB Tech Lab chief Tony Katsur reminded everyone that publishers, not just ID vendors, absorb the cost of that block. The addressable premium publishers charge on Safari inventory was already thin; this removes the signal underneath it.

The supply flood

While identity is being squeezed at one end, the other end of the market is drowning in near-zero-cost supply. DoubleVerify measured a 354% surge in AI-slop ad requests this year, and DecryptAds documented 2,100 fake recipe sites monetised through SSPs in sanctioned and adversarial geographies. This is Bascobert's production shock arriving on schedule: "AI is a production disruption," and near-zero-cost content is now distorting attention-based ad markets exactly the way the ANA's 2023 study warned, when it found 21% of impressions and 15% of spend flowing to made-for-advertising supply.

The barbell

Put the two together and the market resolves into a barbell. On one end, publishers with unique data sets or direct audience relationships: Reuters wholesaling to Meta and Microsoft, The Independent pushing social-commerce past SEO revenue, The Verge rebuilding around registered users. On the other, commodity information being re-priced toward zero. The middle, search-optimised recap and rented reach, is where the slop and the job cuts concentrate. That is the through-line a publisher executive should carry out of this edition: own something the machines cannot regenerate, or own the direct relationship with the reader, because the space between those two poles is closing fast.