The reason is Ed Zitron has been making the rounds of business media lately pointing out that their (OpenAI, Anthropic) accounting doesn't add up at all. It's very enlightening to business types, who don't really understand our technical discussions about the mathematical limitations of LLMs, but understand very well when "profitability" is an accounting trick, and when sufficiently large markets simply don't exist for the implied returns from stratospheric valuations. The Emperor's New Clothes And All That.
The latest domino is Meta/Facebook who, like ElonCo, have announced that they have no use for all the GPUs that they bought previously, and are hoping to rent them out to customers instead.
Presumably, these customers will be able to do the kind of "Great Things"(TM) which the AI scientists on staff at Meta aren't able to do themselves. I'm talking about those AI scientists that Meta hired for $100m with great fanfare last year.
Personally, I'm looking forward to seeing World Hunger and Cancer solved in the third quarter this year by Meta's customers accessing NVDA chippies at a fraction of the price that Elon intends to charge, or failing that finding a way out of the continuing Hormuz Crisis by asking Google Gemini to make a plan and emailing it to the White House.