By Sam Bradley
July 24, 2026
For four years, Google’s Performance Max (PMax) has existed as the digital advertising industry’s most polarizing tool. Hailed by Google as the pinnacle of AI-driven efficiency, it has been simultaneously decried by media buyers as a "black box" that strips away necessary strategic levers. However, in a significant shift that signals a new chapter for the platform, Google has begun testing features that finally grant advertisers the power to exclude specific inventory channels.
As of late June 2026, select agencies have gained access to a pilot feature allowing them to opt out of Google’s Display Network and third-party search partner inventory within their PMax campaigns. For a community that has spent years wrestling with the perceived opacity of automated bidding, this represents a major, albeit cautious, concession.
The Core Conflict: Automation vs. Agency
When Performance Max debuted in 2022, it promised to simplify cross-channel advertising by utilizing Google’s machine learning to place ads across Search, YouTube, Display, Discover, Gmail, and Maps. The goal was to maximize conversions by letting AI find the best audience, regardless of the channel.
For many, the reality was starkly different. Media buyers—professionals who pride themselves on granular optimization and budget stewardship—found themselves unable to see exactly where their money was going or, more importantly, unable to stop it from being spent on what they deemed "junk" inventory.
"When PMax first came out, one of the biggest pain points was the perceived lack of control versus standard campaigns," says Sam Clarke, managing director and head of search at Crossmedia. "The lack of strategic levers and visibility was quite a frustration. It created a situation where you felt like you were flying blind."
The frustration was so acute that some agencies famously pulled their clients entirely from the platform. Kyle Rovinski, associate director of search at the agency Duncan Channon, was one of many who grew disillusioned. "You could not trust it," he says, summarizing the sentiment of a cohort that felt forced to prioritize Google’s automated goals over their own specific client objectives.
A Chronology of Concessions
The introduction of the opt-out checkbox is not an isolated event; it is the culmination of a multi-year feedback loop between Google and the global media-buying community. To understand the gravity of this change, one must look at how Google has incrementally "opened" the box:
- 2022: Launch of PMax. Advertisers are introduced to a "set it and forget it" model with virtually no transparency into placement data or negative keyword capabilities.
- 2023: Under pressure from industry backlash, Google begins to slowly roll out reporting features, allowing advertisers to see basic channel performance breakdowns.
- 2024: Google introduces campaign-level negative keywords and first-party audience exclusions. While welcomed, these were seen as "band-aid" solutions for a platform that still mandated presence on the Display Network.
- June 2026: The pilot for inventory-level opt-outs begins. For the first time, users can explicitly check a box to disable Search Partners and the Google Display Network, effectively narrowing PMax back toward its roots in Google Search and YouTube.
This trajectory suggests that Google has finally accepted that "automation" cannot exist in a vacuum. To maintain the trust of large-scale advertisers, the company must provide the visibility that professional buyers require to justify their budgets.
The Mechanics of the New Feature
The new control is deceptively simple: it appears in the PMax console as two distinct checkbox options. By default, both are enabled—a choice that reflects Google’s desire to keep its ecosystem integrated. However, advertisers can now manually deselect "Search Partners" (third-party sites that display Google search results) and the "Google Display Network."
For veteran buyers, this is a game-changer. The Display Network, in particular, has long been a point of contention. "Search advertisers don’t like the Display Network," explains Rovinski. "We don’t want to opt in. We want our budget focused on high-intent environments."
David Dweck, president at Go Fish Digital, echoes this, noting that for years, these channels were effectively "remnant inventory" that advertisers were forced to subsidize under the guise of machine learning efficiency. "It’s a step toward fairness," Dweck adds.
Despite the excitement, access remains restricted. Digiday’s reporting indicates that while the feature is no longer strictly experimental, it is not yet "generally available." Buyers at several agencies reported that their requests for access were denied by Google reps, indicating a slow, phased rollout. James Viney, senior paid media account manager at Roast, describes the current state of play: "It’s not been something that’s been terribly easy to get ahold of."
Official Responses and Strategic Ambiguity
Google’s official stance remains one of calculated diplomacy. A spokesperson confirmed the pilot’s existence but declined to comment on the timeline for a broad release or the specific catalysts for the change.
"This is a pilot launched with a limited group of advertisers," the spokesperson stated. "At the same time, our North Star has been empowering advertisers with clear visibility and new ways to confidently steer PMax campaigns. As our AI capabilities evolve, we remain dedicated to providing the tools needed to help drive real business outcomes."
This "North Star" rhetoric highlights the tension Google faces: it must continue to push AI-driven, high-margin products while simultaneously preventing a mass exodus of advertisers who feel they are losing control over their own brand safety and budget allocation.
Implications for the Future of Search
The industry is already seeing a measurable impact from these changes. Kaitlin McGrew, head of SEM at the indie agency PMG, notes that as Google has added these "levers," client confidence has returned, leading to a direct increase in spend.
"We’re eager for those levers," McGrew says. "We want to be able to manipulate—we want to double down. Having that insight unlocks that." According to McGrew, after comparing Google Shopping performance with PMax, several of her clients shifted their budgets, resulting in a 10% average increase in PMax investment.
The ChatGPT Factor
Why the sudden pivot toward openness? The answer likely lies outside of Google’s own hallways. In February 2026, the launch of ChatGPT’s ad platform sent shockwaves through the industry. OpenAI has been aggressively building out its ad infrastructure, including conversion pixels, video formats, and international expansion.
For the first time in two decades, Google’s dominance in search-based advertising is facing a legitimate, existential challenge. While Alphabet reported a 17% rise in second-quarter search revenues—reaching $63.27 billion—that figure represents a cooling period compared to the 19% growth seen in the same quarter of 2025.
Google’s decision to yield control is not merely a gesture of goodwill; it is a defensive strategy. By reducing the friction that leads to advertiser frustration, Google is attempting to lock in its user base before competitors become viable alternatives.
What This Means for Media Buyers
For the average media buyer, the implications are clear: the "black box" is becoming more transparent, but the burden of expertise remains. As more levers are handed to the human user, the responsibility for campaign success shifts back to the practitioner.
If you choose to opt out of the Display Network, you are now responsible for the performance of the remaining campaign. If the metrics dip, the "AI made me do it" excuse is harder to leverage. Conversely, those who master these new controls will likely be able to extract significantly more value from their budgets, finally bending the machine to their will rather than the other way around.
As we move into the second half of 2026, the industry is watching closely. The "checkbox" may be small, but its ripple effect on the multi-billion dollar search industry could be seismic. Google is learning that while AI can manage the math, it cannot replace the strategic necessity of the human buyer—and for the first time in years, the company seems willing to play by those rules.
