6h ago

Google DeepMind's David Pfau argues that tech giants' commitment to unlimited AI spending guarantees a financial bubble

Prakash predicts a major architectural breakthrough within 18 months.

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Original post

The second people stop thinking it's a bubble, they invest even more. Almost every major tech company has said they will spend on AI until they literally can't spend any more. It's guaranteed that this will scale until it is, in fact, a bubble.

4:45 AM · May 29, 2026 View on X

I don't know if the amount of money *currently* being invested is justified or not. If it turns out it is justified, people will double down and spend more. Constant double-or-nothing bets cannot pay out indefinitely.

David PfauDavid Pfau@pfau

The second people stop thinking it's a bubble, they invest even more. Almost every major tech company has said they will spend on AI until they literally can't spend any more. It's guaranteed that this will scale until it is, in fact, a bubble.

11:45 AM · May 29, 2026 · 3.7K Views
11:46 AM · May 29, 2026 · 1.1K Views

This doesn't mean I think AI capabilities will stop improving if you continue scaling. I think at a certain point the economic value derived from the increased capabilities will not outweigh the increased cost of scaling.

David PfauDavid Pfau@pfau

I don't know if the amount of money *currently* being invested is justified or not. If it turns out it is justified, people will double down and spend more. Constant double-or-nothing bets cannot pay out indefinitely.

11:46 AM · May 29, 2026 · 1.1K Views
11:49 AM · May 29, 2026 · 989 Views

I don't know when that point will be.

David PfauDavid Pfau@pfau

This doesn't mean I think AI capabilities will stop improving if you continue scaling. I think at a certain point the economic value derived from the increased capabilities will not outweigh the increased cost of scaling.

11:49 AM · May 29, 2026 · 989 Views
11:50 AM · May 29, 2026 · 500 Views

I think what will likely happen is a breakthrough as big as the transformer within 18 months and potentially within 6. A sudden step up in capabilities using current compute, and a reenergized bull market. Things are not going be linear from here on out.

David PfauDavid Pfau@pfau

The second people stop thinking it's a bubble, they invest even more. Almost every major tech company has said they will spend on AI until they literally can't spend any more. It's guaranteed that this will scale until it is, in fact, a bubble.

11:45 AM · May 29, 2026 · 3.7K Views
3:37 PM · May 29, 2026 · 696 Views