That's because the amount of AI investment looks like orders of magnitude more than anyone is willing to pay for AI products.
They were happy about spending billions, but now the bubble is into the trillions and there isn't tens of trillions in market demand to make an investment that big pay off.
Current buyers are looking to cut back on spending, rather than dramatically increase. And that's based on current prices which are being subsidised by burning investor money, not the prices they need to charge to make a profit.
Cloud and apps didn't need trillions in investment to still not get off the ground. There isn't really any scenario in which current AI spending doesn't turn out to be excessive.