Google's AI summaries kill clicks to websites — but did answer boxes like Featured Snippets already do that years ago?

This explores whether Google's older features that answer on the results page, such as Featured Snippets, also take clicks away from websites, or whether the drop is specific to AI summaries. The direct answer is that the collection has no study that measures Featured Snippets, knowledge panels or other SERP features (the extra boxes Google shows on its results page) on their own. All of its evidence is about AI Overviews. That evidence still tells you a lot about the mechanism Featured Snippets were already using: answering the question on the results page so the user never needs to click.

The numbers on AI summaries are large and they agree with each other. Ahrefs found that the top-ranked result's click-through rate falls by about 58% when an AI Overview appears How much are AI Overviews actually reducing organic search clicks?. Pew tracked real browsing behavior and found people clicked a result 8% of the time when an AI summary was shown, compared with 15% without one. Searches were also more likely to end with no click at all Do AI summaries on Google reduce clicks to actual websites?. The most careful causal estimate is smaller. One study compared English Wikipedia, which got AI Overviews, with German and French Wikipedia, which didn't, and found a drop of about 5% Does AI search summaries divert traffic away from Wikipedia?. The gap between 5% and 58% is worth noticing. Correlational studies can't easily separate the AI box from the kind of query that triggers it. Those are often quick factual lookups, where a Featured Snippet was probably already absorbing clicks.

That Wikipedia study names the mechanism: an answer layer that satisfies the user before any click reaches the source. Featured Snippets were an early, simpler version of that layer, so they likely set the baseline AI Overviews are now cutting into further. Publishers are acting as if the trend will continue whatever the feature is called. In a Reuters Institute survey, news executives said they expect search referrals to fall 40–43% over three years Will AI Overviews reduce search referral traffic to publishers?.

The less obvious consequences are further downstream. When fewer people click through, fewer sources get looked at at all. A field experiment found that people who learned with ChatGPT did worse than people who used Google Search, partly because they explored less of the surrounding information Does ChatGPT harm informal learning compared to Google Search?. At the level of the whole web, research on retrieval collapse shows that results can keep looking accurate while the range of sources behind them narrows into a monoculture Does synthetic content in search results hide ecosystem decay?. Lost clicks matter for publishers' revenue, and they also cut the feedback that keeps original sources being written and found. If you want firm numbers on Featured Snippets specifically, you'll need to look outside this collection.