The Inevitable Convergence: Why AI is Rewriting the Economics of Advertising

As AI search becomes a new discovery layer, the traditional query-to-click economy is expanding into conversational territory. Here is the framework for what comes next. 

A shift from keywords to conversational intent.

The thesis: Attention is the currency, but the exchange rate is changing

For a century, the axiom of media has been absolute. 

Advertising follows attention.

From print to radio, radio to television, and television to the web and mobile, every new platform was initially seen as a refuge from commercialization. Each time, monetization followed.

AI search is no different, but the pace and depth of adoption are unprecedented.

Users are not abandoning search. They are expanding how they discover. Alongside traditional search-and-browse behaviors, they are increasingly shifting to ask-and-receive workflows. This is more than a new interface. It reshapes how intent is formed, refined, and expressed.

As discovery becomes conversational, monetization must evolve with it, moving beyond static placements toward context-aware integration.

Why subscriptions are not enough

The introduction of advertising into AI platforms is often framed as a corporate cash grab. I argue, however, it’s structural. The economics of AI make it difficult to sustain at scale through subscriptions alone.

Unlike a traditional database query, an AI Search AI response requires massive, continuous compute power. The energy and infrastructure costs per query are orders of magnitude higher than traditional search. 

While $20/month subscriptions may support power users, they cannot fund broad, global access. If AI is to remain widely available, it requires a scalable subsidy model.

Advertising has historically played that role. 

It remains the only mechanism capable of offsetting high delivery costs while preserving open access to the remaining 95%.

From keywords to conversational intent, the new framework

This is where the real shift begins.

In traditional search, advertisers bid on keywords, which are fragmented signals of interest. Intent is inferred from short queries and refined through clicks.

In conversational AI, intent develops in dialogue. More than just search, users use conversation to refine. Each exchange adds context, including preferences, constraints, and goals.

• Old world: A user makes broad searches like ‘best running shoes.’ 
• New world: A user discusses marathon training, mentions knee pain, and asks for stability recommendations.

The difference is not subtle. The second scenario reflects specific, qualified intent.

For advertisers, this changes the economics of targeting. Broad keyword matching gives way to intent-level alignment. The result? Advertisers will have the ability to introduce a relevant solution at the moment a need is fully defined.

The trust paradox

The opportunity is significant, but so is the risk.

If an LLM recommends a product, users will inevitably ask, if this is the best answer based on data, or a paid placement.

A trust war is already emerging between closed, ad-free models (like Anthropic’s current positioning) and open, ad-supported ecosystems.

To win this trust war, the industry will need clear standards for how advertising appears within AI responses. Paid placements cannot be blended into generated output or presented as neutral recommendations. They must be clearly identified, for example, as sponsored citations, and visibly distinct from organic responses.

Transparency is not a compliance checkbox. It’s a retention strategy. The moment users begin to question whether recommendations are influenced by undisclosed ads, confidence erodes and with it, long-term engagement.

Measuring influence in a conversational world

The central challenge in this transition is visibility.

In a conversational interface, there is no rank to monitor and no SERP to scrape. Traditional digital metrics including impressions, click-through rates, position tracking were built for page-based environments. Dialogue changes the measurement model.

This shift requires a rethinking of market intelligence.

At Similarweb, we are closely tracking how advertising is evolving in AI-driven environments. My focus is not just on traffic, but on influence, understanding how and where brands surface within AI-generated responses.

Key questions emerge:

• Which brands is the AI citing?
• Who appears in the consideration set for specific intents?
• How do AI recommendations translate into downstream traffic and conversion?

The future of measurement moves beyond clicks toward understanding impact across the full discovery journey.

Navigating AI advertising

We are entering uncharted waters. The rules of SEO and any form of digital paid advertising are being rewritten in real-time. What has not changed is the underlying principle. 

Brands need to reach audiences, and audiences need efficient ways to discover solutions.

The advantage will not go to those who resist advertising in AI environments, but to those who understand how they function. Success will depend on using data to interpret conversational intent, visibility, and influence.

At Similarweb, we are not simply observing this shift. We are developing the measurement frameworks behind it, extending our Ad Intelligence capabilities to help brands navigate this next phase of digital discovery.

by Harel Amir

Harel Amir is the General Manager and Head of Product, Ad Intelligence at Similarweb. With over two decades of worldwide experience in digital advertising tech and business.