I don't buy Powell view from his comment: you can have revenue but not profits, and also the dotcom [bubble] at the end is what makes AI possible.
While I agree with your general sentiment, in fairness, Powell didn't say "revenue", he said "earnings", which is near equivalent to profits in financial reporting lingo.
But the AI companies do not have profits. Even Google/MS/Meta are probably subsidizing AI with the profits from their non-AI businesses.