Rational Exuberance: Why $3 Trillion in AI Investment is Mathematical Certainty, not Madness


Author: Andrew Keen September 12, 2025 Duration: 38:56
Podcast episode
Rational Exuberance: Why $3 Trillion in AI Investment is Mathematical Certainty, not Madness

Today’s $3 trillion investment in AI is not only rational and beyond inevitable - it’s “predestined”. At least according to That Was The Week newletter publisher and techno-determinist Keith Teare. Exuberance is not only required, Keith argues, but absolutely essential in today’s AI mad gold rush. And he’s particularly critical of all skeptics - from traditional tech naysayers (like myself) to mainstream publications like The Economist - which are all a touch questioning of today’s unprecedented boom. What if the $3 trillion AI investment tsunami goes wrong? The Economist asks. But for Keith, it can’t possibly go wrong. The investment has already been made, he argues, and the resultant technology will inevitably benefit humanity. He envisions a world where AI adds $20 trillion to global GDP by 2035, where a kid in rural Africa with an Android phone can access the world's best AI, and where economic growth hits an unprecedented 20% annually. I think this type of teleological argument adds up to about $3 trillion worth of madness. But what do I know?

1. The Scale Defense: $3 Trillion is Actually Small Teare argues the massive AI investment looks rational when measured against projected returns - $20 trillion added to global GDP by 2035, potentially creating $400 trillion in company value (at 20x multiples). His math: even if the investment seems huge, the predicted gains are exponentially bigger.

2. AI's Business Model Advantage Over Previous Tech Booms Unlike the internet (which relied on advertising and attention-grabbing) or early TV (which devolved into reality shows), AI operates on subscriptions and API usage. Teare believes this model doesn't require undermining human outcomes to generate profit - making it fundamentally different from past transformative technologies.

3. Individual Failures Don't Equal Systemic Collapse While specific companies (like Perplexity at $20B valuation) might fail, Teare argues the overall AI ecosystem is "failure-proof" because trained models retain their value even if companies go bankrupt. He compares it to the Channel Tunnel - the infrastructure survived financial collapse and eventually thrived.

4. The "Western Suicide Wish" Cultural Diagnosis Echoing Elon Musk and Alex Karp, Teare sees Western civilization as increasingly "ashamed" of Enlightenment values - viewing humans as problems rather than solutions. He argues AI represents a return to human agency and innovation as answers to global challenges.

5. Content Creators Face a Reckoning The decline of web traffic (8% this year) signals the end of advertising-based content monetization. Creators must either embrace quality/subscription models or find ways to integrate with AI systems through attribution and linking - but the traffic-based economy is dying.

Keen On America is a reader-supported publication. To receive new posts and support my work, consider becoming a free or paid subscriber.



This is a public episode. If you'd like to discuss this with other subscribers or get access to bonus episodes, visit keenon.substack.com/subscribe

More episodes

Duration: 36:29
Can Swiftynomics save America? That’s the intriguing thesis at the heart of Misty Heggeness’ new book about Swift’s impact on the American economy. Entitled Swiftynomics, it’s as much about Taylor Swift’s fans as it is a…

Duration: 47:03
The Music Man was a 1957 Broadway show written by Meredith Willson, a musician from the small Iowa town of Mason City. The popular play (and later movie) featured a con man called Harold Hill who ripped off the naive peo…

Duration: 54:43
Few biographers can claim to know what it feels like to be Thomas Jefferson more than the Charlottesville-based historian Andrew Burstein. The author of many books about Jefferson, Burstein’s latest, Being Thomas Jeffers…

Duration: 39:13
There was a time in the mid 20th century, the literary historian Gayle Feldman reminds us, when the book business was cool. Back then, New York publishing resembled Silicon Valley tech and the Mark Zuckerberg of his day…

Duration: 47:31
Trump’s Gazan dream is to overlay the complex human history with his own narcissistic real-estate fantasy. But for Maia Carter Hallward, co-author of a new contemporary history of Gaza, this once vibrant Mediterranean en…

Duration: 45:53
The great John Maynard Keynes explained it a century ago. In his 1930 essay, "Economic Possibilities for our Grandchildren," Keynes predicted that the future would be defined by economic abundance rather than scarcity. B…

Duration: 31:58
WTF will happen in 2026? Over the last week, we’ve been running a series of interviews about the promise and peril of the new year. And in this new weekly magazine-style KEEN ON AMERICA show, we feature highlights of con…

Duration: 45:18
If Darwin’s evolutionary theories couldn’t kill America’s faith in God, then what could? That’s the message in Daniel K. William’s new book, The Search for a Rational Faith. Americans, Williams argues, have always sought…

Duration: 55:15
Happy New Year everyone! As the final show of 2025 and first for 2026, we turned the tables and had me interviewed by the formidable David Masciotra. As you will see, my reading of 2025 is more optimistic than many of my…

Logo
Select station
VOL