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Three major ad platform developments raised new questions about advertiser control this week.
- A UK regulator opened an investigation into Meta's commercial terms, two days after Meta paused their rollout.
- Google is scaling ads in AI Mode to 10 more countries, and advertisers cannot opt out of AI Mode separately from Search.
- OpenAI enabled creative enhancements by default in self-serve ChatGPT Ads, so headlines and destination URLs can change without advertiser review.
All three point to the same AI adtech trend, with platforms setting the defaults and advertisers left to find the off switch.
Our Take: Who Decides What an Ad Platform May Change?
The platform that sets the default also decides which exit advertisers get, and only OpenAI volunteered one, with an opt-out toggle in Ads Manager.
Meta paused its terms only after publishers and a regulator pushed back, and Google offered no separate exit from AI Mode.
As we see it, platforms decide what they may change, and advertisers get a say only when a toggle or a regulator hands them one.
Google reports AI Mode only in aggregate, and OpenAI admits changes over time "do not, on their own, establish the effect of creative enhancements."
We'd treat both changes as unmeasured until a platform adds a reporting line, and agencies should tell clients so before moving budget.
Agencies planning holiday spend can compare ChatGPT Ads and Google search budgets against a dated log of which defaults changed in each account.
CMA Opens Competition Act Case Over Paused Terms
The UK Competition and Markets Authority (CMA) opened an investigation into Meta's commercial terms on October 30.
It will examine whether Meta abuses a dominant position by imposing exploitative terms on publishers and advertisers.
Britain's competition regulator on Friday said it has opened an investigation into whether Meta was imposing exploitative terms on publishers and advertisers to use their content to develop its own services, including its AI features. https://t.co/slodAJtggd
— Reuters Legal (@ReutersLegal) October 30, 2026
The terms could let Meta collect content from business websites and use it to develop its own products, including its AI features, without giving them a choice, the regulator said.
The CMA opened the investigation after industry groups, including the News Media Association and Movement for an Open Web, raised concerns.
Meta said there were no grounds for an investigation and maintained that it had committed to consulting publishers and other stakeholders before changing its terms.
It had planned the new terms for October 30, pushed them to November 20 after talks with the CMA, then paused the rollout on October 28.
Meta spokesperson Andy Stone said in a post on X that the company would delay implementation further if consultations extended beyond November 20.
We've heard publishers' feedback on our proposed ads and business terms update. We care deeply about our partners and do not plan to make policy changes without a full consultation with industry groups and leaders. We're committed to getting this right, and as we expect this consultation could extend beyond November 20, in which case we’d delay implementation of the updated terms. Until then our existing terms remain in place.
— Andy Stone (@andymstone) October 28, 2026
The CMA plans to gather evidence from Meta and affected third parties through January 2027, though it calls those dates indicative.
Media buying agencies can tell clients the existing terms still apply, then check which sites a crawling clause would reach if Meta revives it.
Match Type Sets Reach for Google's New Ad Inventory
Ads in AI Mode are expanding to 10 more countries, including Canada, Australia and India, Google Search Ads vice president Shashi Thakur wrote.
He added that multi-turn ads, which can appear on follow-up questions, are also being introduced in the U.S. The UK, Brazil, and Mexico follow in the fourth quarter.
Google's help page says existing Search, Shopping, and Performance Max campaigns join automatically.
Advertisers can't opt out of AI Mode separately from Search.
Match type sets the reach. Exact and phrase match serve only on direct commercial queries.
Broad match, AI Max, Shopping, and Performance Max also match exploratory questions.
Alphabet's Philipp Schindler said that many AI Mode queries are upper-funnel, letting Google "capture new, high-value commercial intent."
On the same earnings call, the chief business officer named lower AI Mode monetization as one of three reasons Search growth slowed.
Some ads also run with short Gemini-written explainers, which advertisers can't write, edit, approve, or opt out of, according to Google's help page.
Advertisers can read the AI Max budget guardrails before widening match types to reach this inventory.
ChatGPT Ads Rewrite Copy and URLs by Default
OpenAI turned on creative enhancements by default for new and existing self-serve and BPO ChatGPT Ads campaigns on October 30, according to its help page.
Sales-managed accounts are not affected.
The system can write new headlines and descriptions, translate text, resize images, and optimize destination URLs.
Each version can run without advertiser review.
Advertisers can opt out in Ads Manager at the account or campaign level, and campaign settings take priority. Opt-outs saved earlier stay in place.
One toggle covers all four kinds of change, so advertisers accept or refuse the whole bundle.
Meta’s equivalent has already misfired in public.
After an account update opted Bookshop.org into a generative AI feature, the bookseller wrote on Threads that Meta had “enhanced (or ruined, really)” one of its ads without its knowledge.
View on Threads
The OpenAI help page also doesn't say what happens to tracking parameters when the destination URL changes.
Agencies running ChatGPT Ads for finance, health, or other regulated clients should opt out first and test enhancements on one campaign later.
Agencies Should Lock Down Ad Settings Before Holiday Spend
Three checks can help agencies catch unwanted ad changes and reporting gaps before holiday media buying locks in.
Switch Off What Clients Must Approve
Check Ads Manager for enabled creative enhancements and turn them off on any campaign where every headline needs sign-off.
OpenAI switched enhancements on by default on October 30, and each version can run without advertiser review.
Click Your Own ChatGPT Ad
Inspect the landing URL after the click and confirm every tracking parameter survives any URL change.
OpenAI lets the system optimize destination URLs, yet its help page doesn't say what happens to tracking parameters.
Map Which Campaigns Reach AI Mode
Review Search campaigns running broad match or AI Max and flag which ones can serve on exploratory questions.
Google limits exact and phrase match to direct commercial queries and reports AI Mode results only in aggregate.
Setting these controls before the next campaign review gives agencies a clearer picture of what platforms can change and what their reports actually measure.
Last week's AI roundup connected cheaper AI to the hours that agencies spend checking output.
ChatGPT Ads adds another source of work.
When did an ad platform last change a setting you never touched?
These leading AI companies help brands audit ad platform defaults and measure what changed.
