News/October 29, 2026

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Opinion: AI answers are eating the search ad machine, and the AI bill is eating the cash

Opinion: Google's searches are growing at the fastest pace in five years, but AI answers earn less per question while the AI capex bill turns free cash flow negative.

·6 min read·AB

Logos of Google, Microsoft Bing, Baidu, Yandex, Naver, DuckDuckGo and ChatGPT on a dark background
Image: applycoding.com; logos are trademarks of their respective owners

Opinion. This is my personal view as a builder, not financial advice. Every number below links to the company or publisher that reported it.

I have been building for the web since 2004, and for most of that time one rule held: if people searched more, Google made more money. This week that rule cracked in public. Alphabet's third quarter showed its fastest year over year search query growth in five years, yet Search and other revenue grew only 12% to $63.35bn, down from 19% in the first quarter and 17% in the second, as CNBC laid out. The market's answer, reported by the BBC, was a drop of roughly 13% in one day and about $500bn of value gone, from $3.97tn to $3.46tn.

My view: AI answers are quietly cannibalizing the search ad model, and the AI capex race is eating the free cash flow that used to make search look untouchable. Both things are happening at once, and that is what spooked Wall Street.

More questions, less money per question

Google did not hide it. On the earnings call, chief business officer Philipp Schindler said the strong growth in AI Mode queries "had an impact because of the lower monetization we were seeing in AI Mode," according to Search Engine Land's call coverage. He called foreign exchange the biggest factor in the slowdown from the second quarter, with softer retail and media spending also playing a part, so AI is not the only cause. But the direction is clear. A classic results page has room for four ads and ten blue links. An AI answer that solves the question in one paragraph has room for far fewer, and the user often never clicks anything.

Google's own numbers show how people are changing. Sundar Pichai says AI Mode queries are on average three times longer than traditional searches, and one in five use voice, images or documents. Longer, richer questions are great for users. They are harder to sell an ad against.

The other engines tell the same story, at different speeds

I checked the latest reported numbers for the other big engines, and the pattern holds wherever AI answers are furthest along.

Engine Latest reported period Search or ad metric Change vs a year ago Global search share, Sept 2026
Google Q3 2026 Search and other revenue $63.35bn +12% (was +19% in Q1) 89.94%
Microsoft Bing FY27 Q1 (to Sept 30) Search and advertising revenue ex TAC +12% 5.29%
Baidu Q2 2026 Online marketing revenue RMB13.1bn down 19% 0.44%
Yandex Q3 2026 Search and AI services revenue RUB144.7bn +4% 1.31%
Naver Q2 2026 NAVER Platform ads KRW1.45tn +7.5% 0.26%
DuckDuckGo Private, no financials Usage share only n/a 0.74%
ChatGPT October 2026 More than 1.2bn weekly users n/a Not counted as a search engine by StatCounter

Baidu is the warning light. It has pushed AI answers deep into its search results, and its online marketing revenue is now falling by double digits. Baidu itself blamed competition for user attention and a deliberate delay in monetizing AI search. Yandex grew its search and AI block by just 4% while the rest of the group grew 12%. Naver is the healthy exception so far, and it says its new AI Briefing ads convert better than classic search ads, which is the most hopeful data point in this whole table.

Bing is the odd one. Microsoft's search and ad line grew 12%, but that line now also includes LinkedIn marketing and premium subscriptions, so it is not a clean read on Bing. Bing's share did tick up, from 4.1% in September 2025 to 5.29% in September 2026 on StatCounter. Google is still near 90%. Nobody is stealing Google's search box. The box itself is earning less per use.

The capex bill arrives at the same time

The second pressure is spending. Alphabet's capital expenditure was $51.4bn in the quarter, more than double the $24.0bn a year ago, and free cash flow was negative $9.1bn. Alphabet told analysts that figure also absorbed a $5.2bn European Commission fine payment, per the call transcript. Amazon reported negative free cash flow of $42bn, per the BBC. When the core ad engine slows just as the data center bill doubles, the old story of search paying for everything stops working.

The case against my own argument

To be fair, this is not a collapse. Alphabet's operating income actually rose to $40.6bn from $31.2bn. The roughly 25% drop in net profit is mostly an $8.2bn swing in other income, largely an unrealized loss on its SpaceX stake, not search. Google Cloud more than doubled to $30.7bn in revenue, so the capex is already buying real growth. Microsoft spent heavily too, $39.4bn on property and equipment, yet still produced $58.0bn in operating cash.

And Andy Jassy made a point I agree with: "there is not one tool to rule the world." People assumed the early leader in every past platform shift would own everything, and it was never true. Search will not vanish. It will split across chat assistants, AI Mode, agents and classic links, and the ad formats will follow, the way Naver is already testing.

A builder's takeaway

If you build products or run a site, plan for search clicks per query to keep falling even as total searching grows. Three things I am doing on applycoding.com:

  1. Write primary, specific, well structured content that AI answers want to cite, not thin pages that an answer box replaces.
  2. Own the relationship directly through newsletters, accounts and communities, so a ranking change is not a business risk.
  3. Measure AI referrals separately from classic search, because that is where the next decade of discovery is heading.

The search box is not dying. The free ride on it is.

Sources