Google Still Owns 90% of Search, but Two Senior AI Engineers Just Left for Competitors and Its Stock Had Its Worst Day in Over a Year

The Numbers Are Still Google's. The Trend Lines Are Not.

Google controls roughly 90% of the global search market as of June 2026, according to CNBC. Its revenue growth in Q1 2026 was the fastest for any quarter since 2022. Alphabet's stock has more than doubled over the past year.

This is the baseline. Google is not collapsing.

But the surrounding data points merit attention.

What Is Actually Shifting

Microsoft's Bing reached 1 billion users for the first time last quarter, according to CNBC. Search engine DuckDuckGo is reporting install rate jumps of up to 40% per week. Google's search traffic is down slightly over the past month, while ChatGPT's is up modestly.

ChatGPT, which surpassed 1 billion monthly active users recently according to CNBC, consistently ranks as the top free app on Apple's iOS App Store. Anthropic's Claude is currently eighth, one spot behind Google Gemini.

These are real numbers. They are not catastrophic for Google. They are not insignificant, either.

Two Departures in One Week

The talent story is more pointed. Noam Shazeer, a vice president of engineering and co-lead of Gemini AI, announced last week he was leaving Google to join OpenAI. Two days later, John Jumper, a DeepMind vice president and engineering fellow, said he was departing for Anthropic.

Alphabet shares fell 5% on Monday, the stock's worst single-day drop in more than a year, according to CNBC.

Analysts at Jefferies pushed back on the alarm. Their written assessment: they "don't read the recent departures as a signal that Google is doing less with AI, but rather as another data point in an industry-wide war for talent in which frontier labs are aggressively bidding." That is a reasonable interpretation. Senior engineers change employers. The AI sector is flush with capital ahead of anticipated IPOs from OpenAI, Anthropic, and others, and those companies are paying accordingly.

But Shazeer was not a mid-level engineer. He co-led Gemini. That is a senior loss on a flagship product.

A Google spokesperson declined to comment to CNBC.

The Structural Problem Google Has Not Solved

The deepest issue is not market share or headcount. It is the business model.

Ads account for about three-quarters of Alphabet's revenue. That advertising machine has funded costly long-term bets and close to $200 billion in AI infrastructure spending.

Generative AI threatens the loop. When ChatGPT or Google's own Gemini gives you a synthesized answer, you often do not click through to a website. No click-through means no ad impression. No ad impression means no revenue from that query.

As CNBC noted, Google faces a dual threat: losing search dominance to competitors, or winning the AI transition and cannibalizing its own ad-dependent search business in the process. There is no clean path where Google simply "does AI" and keeps the current revenue model intact.

Lily Ray, vice president of SEO and AI search at marketing firm Amsive, described the user behavior pulling in the opposite direction: "A lot of people use Google because Google is like the front page of the internet, but they want to go on these journeys and do the clicking and searching themselves and make their own decisions."

The Anti-AI Cohort Is Real

The strongest pushback on the "AI will replace search" narrative comes from users themselves. A Pew Research Center study published in March found that roughly half of Americans said AI in their daily lives made them "more concerned than excited."

Earlier this month, DuckDuckGo launched browser extensions that allow users to default to noai.duckduckgo.com — a search experience with AI explicitly removed. The install spike that followed suggests there is a meaningful and voluntary market for non-AI search.

Some users want to do their own browsing and are choosing tools that let them.

What This Does NOT Mean

Google is not in crisis by any conventional metric. A company with 90% market share, accelerating revenue growth, and a doubled stock price over twelve months is not on the ropes.

The Jefferies framing — that this is an industry-wide talent war, not a Google-specific collapse — is supported by the facts currently available. No verified evidence in these sources establishes that the departures reflect internal dysfunction at Google specifically, as opposed to competitors simply paying more.

The Unresolved Question

The forward-looking uncertainty is real: can Google build a profitable AI answer product before the shift in user behavior erodes enough of its ad revenue to matter? The company has the resources, the talent base, and the infrastructure to compete. It also has the most to lose if AI-generated answers permanently reduce the click-through volume that funds the whole operation.

Google has not publicly disclosed its ad revenue per AI Overview — the summary answers it now surfaces at the top of search results. Until it does, the question of whether AI search can sustain Google's business model remains open.