Monday Briefing: Meta Just Passed Google. That Took 22 Years.

Good morning, it's James here. The number one ad seller on the planet changed last week, and most CMOs missed it because the headline came in a research note instead of a press release. Let's fix that.

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The Lead: Meta Is Now Bigger Than Google

For the first time since Google began selling ads in 2003, somebody else is on top.

What happened: Emarketer projects Meta will pull $243.46 billion in global ad revenue this year, edging Google's $239.54 billion (Adweek, May 5). The market share gap is razor thin (26.8% to 26.4%), but it's directional. Meta is growing 24.1% year over year. Google is growing 11.9%.

Why CMOs should care: This isn't a small platform leapfrogging through scale. This is the ad market voting on which black box they trust more. Meta's Advantage+ has spent four years compounding into a system that rewards advertisers with first-party data and large creative volume. Google's response, AI Max for Search, is younger, more expensive, and less profitable for advertisers who run it (more on that below). The story under the story is when budgets had to choose between "automate everything" and "automate parts," Meta won the argument.

The take: If your 2026 budget still treats Meta and Google as roughly equivalent line items, you are pricing the past. The reallocation happens whether you decide it or not. The question is whether your team architects it on purpose. Two practical moves this week: (1) ask your media lead what your Meta-to-Google share looks like quarter over quarter, and whether it's tracking the market and (2) audit which platform is getting your best first-party data feed. The platform you starve of signal is the platform you are quietly disinvesting in.

What I'm Watching: OpenAI Just Removed The Velvet Rope

While the Meta-Google headline got the noise, OpenAI did something quieter and arguably more interesting. It opened ChatGPT Ads Manager to every U.S. advertiser and dropped the $50,000 minimum spend (Digiday, May 5).

A month ago, ChatGPT advertising was only a holding-co conversation: Dentsu, Omnicom, Publicis, WPP. Now it's open to anyone with a credit card. CPC bidding is live. CPA bidding and third-party measurement are "coming," with no timeline. The unit is small (a favicon and a line of text) and the inventory is finite. That is exactly the configuration that produced Google's first $100 billion in ad revenue.

This is a "test now, scale later" moment. Spend $5,000 against a high-intent product category, learn what conversational placement does to your CAC, and own the playbook before your competitors notice the platform exists. Brands that piloted Meta in 2008 didn't need it to work. They needed to know how it worked when it would.

By The Numbers: 23 Days

23 days. That's how long you have to export your historical Google Ads granular data before Google enforces a hard 37-month cap on hourly, daily, and weekly reporting.

The new data retention policy was announced May 1 and takes effect June 1, 2026 (PPC Land). After June 1, anything older than 37 months is gone from the API, the UI, scripts, the Google Ads Data API, and BigQuery Data Transfer. Reach and frequency get cut harder, capped at three years total. Monthly and annual aggregates keep their 11-year window.

This sounds like an analytics-team problem. It is not. Multi-year attribution models, post-cookie incrementality work, brand-pulse correlations against media weight: anything that ladders back to daily granular data older than 37 months needs a snapshot before June 1. Tell your team this week. The deadline is real.

The Reading List

• "AI Mode and AI Overviews: Five Updates" (Google). Inline links, hover previews, and community attribution from Reddit and forums. Read it as the moment Google admitted AI summarization without source-routing was a bad trade. Implications for your content strategy are immediate.

• "The CPC Pain Is Real: A Year of AI Max" (Digiday). The receipts are in: 10 to 25% CPC increases across agency books, 35% more advertisers in the auction. Worth forwarding to whoever defends your search budget.

• "The 2026 Marketing Vanguard" (Adweek). The 20 CMOs to watch this year, including Lara Balazs (Adobe), Fabiola Torres (Gap), Kelly Mahoney (Ulta), Thomas Ranese (Intuit). A snapshot of what "fiercely human amid rapid change" looks like in practice.

• "Brandcast Preview: YouTube's Upfront Pitch" (Adweek). Brandcast lands May 13 at Lincoln Center with Trevor Noah hosting and Chappell Roan headlining. Neal Mohan's pitch is full-funnel video plus creator integrations. The casting tells you who YouTube thinks the buyer is.

One More Thing

Two weeks ago we wrote about the upfronts. Last week we wrote about CTV solving its measurement problem. This week we are writing about Meta passing Google. Same story, three angles. The platform pecking order is reordering in real time, and the ad budgets you set in November were built on a market that no longer exists.

The CMOs who win 2026 are the ones who stop defending last year's plan.

See you next Monday. Stay sharp out there.

—James