> Hyperscalers are in big trouble if the build out suddenly stalls.

How would you define stalled? Hardly anything has been built in the last 2 years (and most of those juicy new GPUs must be sitting in a warehouse somewhere waiting to be installed, together with all of our RAM and HDDs).

but google, meta, microsoft and amazon were making a ton of money even before the AI boom.

OpenAI and Anthropic's can go bust, but ads, windows and cloud hosting would still make a ton of money without them.