The Twenty Minute VC (20VC): Venture Capital | Startup Funding | The Pitch

20VC: The AI Bubble Is Wrong | AI Margins Need to Improve | Revenue Concentration Should be a Concern | Why People Over-Estimate Open Models But Enterprises Still Fear Frontier Models with Aaron Katz, ClickHouse

August 31, 2026

AI Summary

5 min read

Aaron Katz, CEO of ClickHouse, sat down with Harry Stebbings at Craven Cottage, Fulham’s home ground, to discuss the state of the AI market, the realities of building infrastructure for an agentic future, and why he believes the conventional narrative about an AI bubble misses the point. ClickHouse, the open-source online analytical processing database, has crossed $350 million in annual recurring revenue, counts Anthropic, OpenAI, Tesla, and Microsoft among its customers, and is on a trajectory Katz expects will hit $1 billion in ARR before December 2027. The conversation ranges from gross margins and revenue concentration to the difference between open-weight models and open-source software, and why Katz thinks enterprises will continue to favor frontier labs over Chinese open models for sensitive workloads.

The AI Revenue Surge Is Real, But Margins and Durability Are the Open Questions

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What you'll learn

1 (00:01) **The Acceleration is Unprecedented** - Katz opens by describing the pace of AI adoption as faster than internet, mobile, or social, with revenue growth unlike anything seen before.
2 (05:22) **Are AI Gross Margins a Structural Problem?** - Katz addresses whether the 30-35% gross margins at some AI-native companies represent a new normal.
3 (06:37) **The Biggest Risk: Revenue Durability** - Katz identifies low switching costs as the primary investor concern, especially for model-layer companies.
4 (07:28) **The "AI Awakening" at ClickHouse** - Katz describes sending an internal email titled "The AI Awakening" to accelerate internal adoption of AI coding tools.
5 (09:27) **The Sales Efficiency Mistake** - Katz reflects on being "too efficient" and wishes he had invested more in sales capacity earlier.
6 (10:58) **Key Lesson from Marc Benioff at Salesforce** - Katz shares the single biggest lesson from 12 years working with Salesforce's founder.
7 (12:08) **AI is Compressing Roadmaps** - Katz confirms that AI tooling has dramatically accelerated ClickHouse's product development.

+ Full timestamped outline available in the app

Guests on this episode

Harry Stebbings

Show Notes

Aaron Katz is the Co-Founder and CEO of ClickHouse, the real-time analytics database powering companies including OpenAI, Anthropic, Tesla and Microsoft. ClickHouse just surpassed $350M in ARR and raised over $1B from investors including Dragoneer, Khosla Ventures, Coatue, 20VC and Benchmark. Previously, Aaron was CRO at Elastic, where he helped scale revenue from approximately $5M to $500M and led the company through its IPO. Before Elastic, he spent 12 years at Salesforce, working alongside Marc Benioff and helping transform it from a 200-person startup into a global software giant.

AGENDA:

4:05 Are we in an AI bubble?
13:40 How does software change when agents—not humans—make buying decisions?
22:28 Will 90% of tokens flow through open models; can enterprises trust them?
31:09 Why did ClickHouse sponsor Fulham; and could sports teams become $20B assets?
35:49 When will ClickHouse hit $1B ARR?
38:31 Can startups still win elite talent from OpenAI? Biggest remote work mistake?
44:54 Is zero-to-$100M ARR now table stakes; or is durable growth what matters?
48:51 Is college still worth it; which jobs will survive AI?
57:58 When will ClickHouse go public; and why not next year?