Meta overtook Google in global ad revenue for the first time in 20 years. ChatGPT opened self-serve ads to any business. Google formalized agentic advertising. And 70% of the buyer journey now happens in AI tools and private channels your analytics cannot track. Here is what changed and three moves to make this week.
Revolutions can sneak up on you when you’re not looking.
In the mid-2000s, I had spent years building my skillset around one way of doing things. I was convinced that the cloud was just a passing fad to take companies’ money. When my team at Ticketmaster was tasked with moving our flagship product to the cloud, we dove in with every intention of making it work, only to realize we were failing because we were applying yesterday’s logic to a new world. Once we stopped trying to force old systems into a new box and started learning how to build for the cloud properly, we transformed our entire approach in a year. That experience taught me a permanent lesson: in any industry, the advantage doesn’t go to those who hold the line, but to those who move first.
That kind of shift, where the structure that held an industry together simply stops holding, has a distinctive feeling. It doesn’t announce itself with fanfare. Usually it shows up as a single data point that takes a week to fully understand.
Digital advertising had two of those moments last week.
For two decades, the digital advertising world ran on a two-platform assumption. Google owned search intent. Facebook and later Instagram owned attention. Every strategy, every budget conversation, every agency pitch started from those two anchors.
Last week, both anchors moved at the same time.
EMarketer projects Meta will generate $243.46 billion in global ad revenue in 2026, edging past Google’s $239.54 billion. It’s the first time in 20 years Google has not held the top position in digital advertising. Meta’s Advantage+ AI automation and newer ad surfaces on WhatsApp and Threads are driving the growth, with Meta’s ad revenue up 24.1% year over year compared to Google’s 11.9%. The shift isn’t a fluke or a one-year anomaly. The gap is expected to widen.
On May 5, OpenAI launched self-serve advertising in ChatGPT through a new Ads Manager tool. The launch eliminated the previous $50,000 minimum spend requirement, which had kept ChatGPT advertising limited to large brands and enterprise accounts. Any business, any budget, can now run campaigns on a platform with over 100 million daily active users. Advertisers choose between CPC and CPM bidding models and OpenAI introduced pixel-based tracking and a Conversions API for post-click measurement.
At Google Marketing Live on May 20, Google formalized its shift to agentic advertising. The centerpiece is Ask Advisor, a unified AI agent powered by Gemini that spans Google Ads, Google Analytics, Merchant Center and Google Marketing Platform. The system is designed to operate as a full-time strategic partner, making campaign decisions without requiring a human to manage individual levers. Google also unveiled new ad formats built for AI Search results, designed to close the gap between a user’s question and a purchase.
A 2026 study found that 70% of the buying journey now happens in places marketers cannot track: AI chatbot conversations, private Slack communities, direct messages and peer recommendations. When a potential buyer asks ChatGPT about the best digital marketing course for beginners, the answer they get shapes who makes their shortlist. None of that activity shows up in your CRM or your analytics dashboard. The buyers who choose you or pass on you are doing it in channels that are invisible to your current measurement stack.
IMG note: The source cited above is an AI-generated content aggregation site, not a primary research publisher. We found limited EEAT signals and indications some underlying data may originate from 2023 research. We are conducting a deeper review and will publish findings in a future issue. The dark funnel trend is corroborated by multiple independent sources; treat this specific percentage as directional rather than precise.
Sources: EMarketer · Axios · Search Engine Land
The standard ads conversation has sounded like this for a long time: pick Google for search intent, pick Meta for awareness and social proof, measure what converts and adjust your split. That framework worked because the two platforms accounted for the majority of digital ad spend and most of the buyer’s journey left a trackable footprint.
Both of those things are now wrong.
When Meta overtakes Google in ad revenue, the headline sounds like a leaderboard story. But the more useful reading is about surface area. Meta’s growth is coming from AI-powered automation, WhatsApp and Threads. Those are not traditional ad placements. They’re conversation-layer surfaces, where trust gets built through interaction rather than through a keyword match.
At the same time, OpenAI just added a third platform to your consideration set. And it’s now accepting any budget.
The reason this matters for small businesses is not the ads themselves. It’s what the ads reveal about buyer behavior. People are already inside ChatGPT asking product questions, comparing options and building shortlists before they ever reach a search engine or your website. If your brand shows up in those answers, you have a shot. If it doesn’t, you’re not on the list.
That’s the dark funnel problem. Seventy percent of the buying journey now happens before any trackable click. AI tools are the fastest-growing slice of that invisible research phase.
Open ChatGPT and type something your ideal buyer would type. At IMG, we’re asking “Best SEO courses for small agencies,” “Who teaches digital marketing for small businesses,” and “Who does science-backed marketing tests for SEOs?” See if your name, your course, or your business appears. If it doesn’t, you now have a clear and specific gap to close.
The way to close it is through content that AI models can find and cite. Original research, specific case studies, named client outcomes, stated opinions on industry questions. AI models pull from published sources. The more specific and authoritative your published content, the more likely you appear in those generated answers. This is the same content quality work that has always mattered for SEO. But now it has a second job: feeding the AI research layer that precedes the search query.
Add a “how did you hear about us?” field to your checkout or inquiry form. Self-reported attribution is less precise than pixel tracking, but it’s the only tool that can see inside the dark funnel. You’ll start hearing things like “someone mentioned you in a Facebook group” or “ChatGPT came up with your name,” and those answers will tell you more about where your real marketing surface area is than any dashboard you currently run.
Consider running a small ChatGPT Ads Manager test this month. Keep the budget minimal, $300 to $500. Pick your most specific offer, the one built for a buyer who already knows what they need. Treat it as discovery. You’re not trying to scale yet. You’re learning the channel before rates go up and competition arrives. That window is usually short.
On the Google side, Ask Advisor and agentic campaign management shift the most important skill in paid media. It’s no longer setting bids or writing ad copy. It’s setting the right objective up front, because AI tools will execute against that objective with very little additional input. If you’re managing paid campaigns manually right now, the most valuable thing you can do is get precise about what you’re actually optimizing for before you hand it to a tool that runs on autopilot.
The ChatGPT self-serve launch is the most consequential development for small businesses in the advertising category this year. Not because ChatGPT ads will outperform Google or Meta tomorrow, but because of what opening to any budget signals: AI platforms are becoming commerce layers, places where buyers make purchasing decisions, not just where they consume content.
The $50,000 minimum existed because OpenAI wanted controlled conditions for early advertisers. Dropping it entirely means they’re confident enough in the product to open it to anyone.
That’s worth paying attention to.
For agency owners and solo marketers, the practical window here is early-adopter access. The first months of any new ad platform are typically the cheapest and least competitive. That window closes once adoption spreads and more advertisers arrive. You don’t need a large test to learn something real about the channel.
The bigger, longer-term investment is the one that pays across all three platforms at once: building a brand that AI can find, cite, and describe accurately. That means original research, specific named results, stated positions on questions your buyers are asking. A brand that AI tools can describe clearly in one sentence is a brand that shows up in the dark funnel, in AI-generated search results, and in the word-of-mouth conversations you’ll never directly see.
That’s not a short-term ad play. It’s the most durable marketing infrastructure available right now.
Open ChatGPT right now and type what your ideal customer would type. See if your name or business shows up in the answer. If it doesn’t, that’s the gap to close first. Bring your results to the vault forum and let’s compare notes.
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