That has been my thesis ever since Dario went on about how difficult it is to forecast capacity on the Dwarkesh podcast right about the time Claude started having 9's comparable to GitHub's.
Even as an outsider, seeing all the cloud providers bemoan their lack of capacity and their growing backlogs, I could tell compute capacity was already the biggest constraint on industry growth and that it would be very hard to come by in the future... which also probably made it the only moat.
And now we see Anthropic making very expensive deals with competitors to secure the necessary capacity. Claude likely still has enough momentum to make it worthwhile. But I can't believe Dario, probably the most AI-pilled of them all, would under-estimate demand so severely.