How I Invest with David Weisburd

What if AI makes software abundant and shifts venture capital’s biggest opportunities into the physical world? Leo Polovets is a General Partner at Humba Ventures, an early-stage deep tech fund investing across robotics, defense, energy, manufacturing, and other physical industries. Leo explains why AI is commoditizing software, why hardware may capture more value as a result, and why some of the best opportunities are hiding in industries with almost no startup competition. We also discuss how to underwrite deep tech before revenue, what separates exceptional founders, the infrastructure bottlenecks created by AI, and why the biggest risk to deep tech may be its dependence on continued funding.

What if AI makes the founder more important, not less? John Borthwick is the Founder of betaworks, the startup studio and venture firm behind companies including Giphy, Dots, bitly, and TweetDeck, with investments in companies including Twitter, Tumblr, Kickstarter, and Hugging Face. We break down why John now puts more weight on founders than products, how betaworks identified Hugging Face before transformers reshaped AI, and why he believes the biggest opportunity is moving toward the AI application layer. We also discuss open-source AI, AI security, the changing nature of work, and why John believes AI was discovered rather than invented. John Borthwick is the Founder of betaworks, the startup studio and venture firm behind companies including Giphy, Dots, bitly, and TweetDeck, with investments in companies including Twitter, Tumblr, Kickstarter, and Hugging Face. We break down why John now puts more weight on founders than products, how betaworks identified Hugging Face before transformers reshaped AI, and why he believes the biggest opportunity is moving toward the AI application layer. We also discuss open-source AI, AI security, the changing nature of work, and why John believes AI was discovered rather than invented.

What if the future of warfare is determined by who can innovate faster, not who can spend more? Ethan Thornton is the Founder and CEO of Mach Industries, a defense technology company he started after dropping out of MIT. We break down how Mach went from experimenting with roughly 20 technologies to becoming a multibillion-dollar company, why Ethan believes asymmetric technology is reshaping modern warfare, and how Pentagon procurement is evolving. We also discuss China and Taiwan, lessons from Ukraine, autonomous warfare, recruiting exceptional talent, taking risk, and why Ethan believes great founders should empower their teams rather than make every decision themselves.

What if the biggest opportunity in private markets isn’t backing companies—but backing the next generation of investment firms? In this episode, I sit down with Douglas Beyer, managing partner and founder of Roaring Brook Holdings, to discuss why emerging managers remain one of the most undercapitalized opportunities in alternative assets. Douglas explains how anchor capital changes fundraising dynamics, why LP relationships determine whether firms survive, and how the best emerging managers build trust through transparency and execution. We also explore GP seeding, organizational durability, and why fundraising momentum matters more than most managers realize.

Which competitive moats will actually survive the AI era? SC Moatti is Managing Partner at Mighty Capital and Board Chair at Products That Count. We break down what Mighty Capital learned from mapping 550 companies by defensibility, why traditional SaaS advantages like switching costs and data moats may be weakening, and why network effects and counter-positioning are emerging as powerful AI-era moats. We also discuss why SC disagrees with the conventional power-law approach to venture, how AI is transforming M&A and corporate innovation, the Product Alpha Effect behind Mighty Capital’s investment strategy, and what venture firms must change to survive the AI transition.

What happens to financial analysts when AI can do the work they used to spend all night doing? Chris Ackerson is SVP of Product at AlphaSense, where he focuses on applying information retrieval, natural language processing, deep learning, and recommendation systems to search and discovery. We discuss how AI is changing the analyst role, why vertical AI can outperform general-purpose models in financial research, and why proprietary data may become one of the most important competitive advantages in AI. Chris also explains why LLMs hallucinate, how AlphaSense is using AI to conduct expert interviews, where humans still create investment alpha, and why the future of financial research may look less like software and more like an AI teammate that never sleeps.

What if the best reason to start a company isn’t to change the world, but simply because you love the game? In this episode, I sit down with Marty Kausas, CEO of Pylon, to unpack how he thinks about building an ambitious company from first principles. Marty explains why Pylon started with a goal of reaching $1 billion in revenue, why market size can matter more than the quality of the founding team, and why the rise of AI has pushed his definition of a generational company even higher.

What if the biggest mistake in venture capital is investing in what already looks like a great venture investment? In this episode, I sit down with Dr. V (Vaibhav Agrawal), Founder ODDBIRD VC, is a San Francisco-based venture investor who spent nearly a decade at Lightspeed, to explore why he believes the traditional venture playbook is changing. Sourcing has become a media and distribution business, companies are staying private longer, and investors increasingly need to think proactively about liquidity rather than simply waiting for their winners to go public.