WARC published its Q1 2026 global ad forecast on Thursday. The headline figure — 10.4% global ad market growth to $1.32trn this year — looks solid. Then you get to the scenarios.
Up to $94bn at risk
A prolonged Middle East conflict could strip $49.9bn from ad market growth in 2026 and $93.9bn across the next two years. WARC’s worst case, Strait of Hormuz closed, oil at $150 a barrel, is modelled on the 1973 oil crisis: stagflation, aggressive monetary tightening, consumer confidence in free fall.
The most exposed categories are the ones publishers depend on. Travel and transport ad spend is already in negative territory in WARC’s baseline, down 3.5% as airlines and tourism operators hold budgets back. Food, technology and leisure either flatline or fall in the severe scenario. Brands under margin pressure cut media first. Publishers feel that early.
Reddit’s two-sided trade
While the ad market faces a potential $94bn hole, Reddit is building a business on the same forces that are pulling traffic away from publishers.
Reddit’s ad revenue is forecast to double from $2.1bn in 2025 to $4.1bn by 2027. WARC points to two drivers: the platform’s role in product research and the use of Reddit conversations to train large language models. The AI systems that redirect audiences away from publishers are partly built on Reddit’s content. Reddit gets paid on both sides of that.
The tech category alone accounts for more than a quarter of Reddit’s projected worldwide ad revenue by 2027. Technology advertisers valued Reddit because consumers use it to research purchases — product threads, comparison discussions, real user experience. That behaviour made Reddit’s data commercially useful to advertisers long before it became valuable to AI developers. When the LLM gold rush started, Reddit already had exactly what the market needed.
Publishers had archives AI companies wanted. Reddit had conversations AI companies needed. The difference is that Reddit’s content lived inside a platform with the commercial infrastructure to licence it. Publishers’ content sat behind editorial systems built for distribution, not negotiation. By the time the AI licensing conversation started, Reddit had signed deals. Most publishers were still deciding whether to object.
Publishers built archives, expertise and journalism. AI companies took it. Reddit built the communities AI companies needed and charged accordingly. That difference is showing up in the numbers, and in Reddit’s UK ad spend figures, which are forecast to rise 86.9% this year as the platform accelerates internationally.
The Media Stack is reader-supported. Join as a free member for occasional posts, or upgrade to £4.99/month for exclusive content and member benefits. Prefer to listen? Subscribe and stream via the Substack app.
Where the brand safety money goes
X returned to ad revenue growth in 2025, up 1.6% to $1.8bn, but remains less than half its 2021 peak. Brand safety concerns persist, sharpened by the platform’s use of its Grok AI to alter images of individuals without consent. Advertisers wanting brand-safe alternatives should, in theory, be heading toward quality publishers. There’s limited evidence they are.
Meta is the more likely destination. Instagram ad revenue hits $101.6bn this year, up 26.9%. Facebook adds $137.8bn, up 19.2%.
The Gulf crisis scenarios affect everyone, but platforms with deep advertiser relationships and sophisticated targeting absorb downturns better than publishers still rebuilding direct commercial relationships after the death of third-party cookies.
Squeezed from both ends
WARC’s James McDonald describes even a contained oil shock as a consumer tax, prices up, spending power down, brands cutting media to protect margins. A prolonged crisis tips into stagflation. Travel, automotive, food and consumer electronics, categories publishers have spent years cultivating — take the direct hits.
Publishers are dealing with an AI audience problem and a potential advertising recession simultaneously. Reddit’s numbers show what it looks like when a platform ends up on the right side of that transition. Most publishers are still waiting for someone else to answer that question.
