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Ben Horowitz & Marc Andreessen: Why Silicon Valley Turned Against Defense (And How We're Fixing It)
Ben Horowitz

Ben Horowitz & Marc Andreessen: Why Silicon Valley Turned Against Defense (And How We're Fixing It)

Nov 19, 2025

Key Takeaways


Palmer Luckey got fired from Meta for backing the wrong candidate—now he's the hero saving American defense, and that shift tells you everything about how fast the ground moved beneath Silicon Valley's feet. For decades, tech and defense were allies, then came 15 years of hostility so visceral that Google employees revolted over a Pentagon AI contract, and when leadership caved, only three people showed up to hear what border security actually involves. But something broke: COVID exposed our inability to make things, Ukraine revealed wars now iterate in days not decades, and suddenly the Harvard dorm room generation realized the people building satellites and drones weren't just necessary—they were the future, while legacy defense contractors still operate on Soviet-style five-year plans that guarantee cost overruns and obsolescence. Now the question isn't whether Silicon Valley returns to its Cold War roots, but whether America wins by becoming more like China's centralized system or doubles down on the chaotic creativity that built nine of the world's ten most valuable companies in 25 years—and the founders flooding into defense, energy, mining, and manufacturing suggest the second American century is just getting started.

Timecodes:
0:00 - Intro
1:32 - When Katherine Boyle Named the Category That Changed Everything
2:54 - Silicon Valley’s Lost Alliance: When Tech and Defense Stopped Working Together
8:50 - “Three People Showed Up”: When Emotional Outrage Replaced Curiosity
14:14 - “It’s Time to Build”: How COVID and The Social Network Defined a Decade
25:28 - Why Hardware Isn’t Hard Anymore: Commodity Parts Meet Advanced Software
29:20 - Space 2.0: Why You Don’t Need to Build Everything Yourself
37:28 - Attributable Systems: Rethinking the Economics of War
44:42 - “The War Won’t Be About Space, It Will Be In Space”
46:33 - Every Country Wants Their Own Silicon Valley
58:01 - Winning by Being More Like Us, Not More Like Them
1:13:51 - Why American Dynamism Founders Are Different

Resources:
Follow Ben on X: https://x.com/bhorowitz
Follow Marc on X: https://x.com/pmarca
Marc’s Substack: https://pmarca.substack.com
Follow Katherine on X: https://x.com/KTmBoyle
Follow David on X: https://x.com/davidu
Follow Erik on X: https://x.com/eriktorenberg

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