CEO of @perplexity-ai on Why Google Dominates the Ad Business

By 20VC

Categories: VC, Startup

Summary

Google's dominance in advertising stems from its search interface being optimized for exploration and discovery—not conversation. Since booking decisions require subjective browsing rather than objective answers, chat interfaces fail to capture user intent, explaining why Booking.com spends ~$16B annually on Google instead of AI chatbots.

Key Takeaways

  1. Chat interfaces are poor advertising vehicles because they deliver objective answers rather than support exploration. When user decisions are subjective and vibes-based (like travel booking), conversational AI loses the discovery experience that drives ad engagement.
  2. Google's top advertiser is Amazon, with Booking.com at #2 spending approximately $16 billion annually. This reveals that transactional platforms with high-value customer acquisition depend on search's exploratory interface, not chat-based discovery.
  3. User behavior differs fundamentally by task: booking flights/hotels relies on comparing multiple options (search-driven), while chat excels at providing singular answers. Understanding this distinction is critical for building ad-supported AI products.
  4. Search-based advertising works because it matches high-intent users actively exploring options at decision points. Chat interfaces break this pattern by answering queries definitively, removing the browsing behavior that monetizes through ads.

Related topics

Transcript Excerpt

How do you book your hotels or flights today? Do you book it on chat GPT or do you book it on Google? Google. Why is that? >> For me, I actually like discovery. I would like to see the options. >> Exactly, right? So, the interface and the interface is less about conversations and more about exploration. So, when when the decision-making is more subjective and vibes-based, you don't need an objective answer engine. And so, the chat interface doesn't capture that user intent, that user behavior right now, which is why it was never a great fit for advertising. Who's the number one advertiser on Google? Amazon. Who's the number two? booking.com. How much do you think booking.com spends on Google? 16 billion, something like that.…

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