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Ben Horowitz on AI Infrastructure, Economics and The New Laws of Software

April 14, 2026

AI Summary

5 min read

The Old Rules of Software No Longer Apply

Ben Horowitz, co-founder and general partner at a16z, opened his conversation with general partner Alex Rampell at the FinTech Connect Conference with a blunt observation: two foundational laws of software engineering that held for fifty years have been overturned by AI. The first was the mythical man-month—Fred Brooks's insight that you cannot throw money and people at a software problem and expect to catch up. "Nine women can't have a baby in a month," Horowitz said. "That's no longer true. If you have enough money and some good data, you can buy enough GPUs and solve basically anything in software." The second was customer lock-in: possession was nine-tenths of the law. Migration costs, data lock-in, user interface dependence—all the moats that protected incumbents are dissolving. Code is easy to replicate, data is easy to move, and the user interface is increasingly an AI that doesn't care about your design. "That moat is gone," Horowitz said.

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What you'll learn

  • 1 (00:39) **The Collapse of the Mythical Man-Month** - The old software rule that you can't throw money at a problem no longer holds.
  • 2 (01:03) **The Erosion of Software Moats** - Customer lock-in, data lock-in, and UI lock-in are all dissolving.
  • 3 (02:29) **The New Laws of Physics for CEOs** - How leaders must adapt when the fundamental rules of software have changed.
  • 4 (04:34) **Compressed Time Horizons and the SaaS Apocalypse** - The window for running with a product has shrunk from years to weeks.
  • 5 (05:23) **Advice for the Pre-AI CEO** - Practical steps for a CEO facing a huge dislocation.
  • 6 (08:27) **Features vs. Products vs. Companies** - The confusion in a world where building features is easy, but building a company is not.
  • 7 (09:45) **The Scale Shift in Venture Capital** - How the firm's size and focus have changed from the 2009 financial crisis to today.

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Guests on this episode

Show Notes

Recorded live at the a16z Fintech Connect conference in Deer Valley, Alex Rampell speaks with Ben Horowitz, cofounder and general partner at a16z, about how AI has rewritten the fundamental rules of software competition, why crypto infrastructure will become essential in an AI-dominated world, and what the future holds for venture capital.

 

Resources:

Follow Alex Rampell on X: https://twitter.com/arampell

Follow Ben Horowitz on X: https://twitter.com/bhorowitz

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Please note that the content here is for informational purposes only; should NOT be taken as legal, business, tax, or investment advice or be used to evaluate any investment or security; and is not directed at any investors or potential investors in any a16z fund. a16z and its affiliates may maintain investments in the companies discussed. For more details please see a16z.com/disclosures.


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