
The “zero-click” shock
When Google rolled out AI Overviews to U.S. users in May 2024, organic CTRs for many informational queries fell by 18 – 70 %.[1]
A Search Engine Land log-file study pegged the average drop on non-branded keywords at 24 %,[2]
while MailOnline reported a 56 % slump on affected terms.[3]
With “Generative Engine Optimisation” (GEO) still immature,[4]
many SEOs are hedging their bets by owning vertical sites where AI summaries are rare or policy-restricted.
Where AI struggles to summarise (for now)
- Regulatory / Age gating (adult, cannabis, Rx)
Google throttles or omits AI answers that could violate YMYL or Safe-Search policies.[5] - Paywalls & logged-in experiences
LLMs can’t ingest gated data in real time, so Google defers to the source site. - Rapidly changing, hyper-local inventory
Menus, stock or pricing go stale quickly; AI risks giving bad info. - Liability-heavy advice (medical, legal, financial)
Overviews appear with heavy disclaimers—or are suppressed altogether—pushing users to trusted brands.
Verticals SEOs are investing in now
- OnlyFans & adult-creator directories
Why AI summaries stay thin: Age-restricted content; Safe-Search keeps AI cautious.
Example sites:
Find a Peach[6],
OnlyFinder, SubSeeker, FansMetric. - Online pharmacy & tele-health
Why AI summaries stay thin: Prescriptions and FDA rules force Google to keep AI advice minimal.
Example sites: Capsule, GoodRx, Hims / Hers. - Cannabis dispensary maps & marketplaces
Why AI summaries stay thin: Federal illegality in the U.S.; menus change hourly.
Example sites: Weedmaps, Leafly, Dutchie. - Specialist medical subsites
Why AI summaries stay thin: Clinician oversight and nuanced data that AI can’t fake.
Example sites: ModernFertility, Mindbloom. - Hyper-local service marketplaces
Why AI summaries stay thin: Real-time availability and pricing vary by ZIP.
Example sites: Thumbtack, TaskRabbit. - Live event & ticketing platforms
Why AI summaries stay thin: Seat inventory changes by the minute; copyright/licensing hurdles.
Example sites: DICE, Songkick. - Niche B2B directories
Why AI summaries stay thin: Specs and pricing locked behind signup walls.
Example sites: Thomasnet, Indie Hackers Tools.
What the new playbook looks like
- Own proprietary or gated data – inventory, ratings or subscription-only content that AI can’t crawl freely.
- Lean into regulatory moats – compliance costs deter generic AI answers.
- Design for transactions – booking engines, quote forms and tele-consults keep users on-site.
- Capture “link-as-citation” value – Overviews still need sources; invest in primary data to earn those links.
- Think community first – forums and reviews generate fresh, long-tail content that outpaces the AI cache.
Takeaways for SEOs
Google’s AI layer isn’t the death of search, but it does shift the battlefield.If your sites answer simple, fact-based queries, expect shrinking clicks.If you can own data Google is reluctant or unable to summarise, you can ride the next wave while competitors fight over a vanishing slice of blue-link traffic.
- ^ Wired: “With AI Mode, Google Search Is About to Get Even Chattier” (May 2025)
- ^ Search Engine Land: “Google AI Overviews hurt click-through rates” (Apr 2025)
- ^ Press Gazette: “Google AI Overviews leads to dramatic reduction in CTR for MailOnline” (May 2025)
- ^ Search Engine Land: “What is Generative Engine Optimisation (GEO)?” (Aug 2024)
- ^ SE Ranking research: “AI Overviews and YMYL Topics” (Sept 2024)
- ^ Find a Peach: North America directory page (June 2025)