OTOH, the other form is that instead of generic AI spend going up it is total spending for a particular AWS account within the umbrella of the firms AWS organization, so that the spending is attributed to a specific project whose use case, other costs, and (presumably) benefit and/or revenue can be considered.

Of course, if your AWS stuff is just one undifferentiated bucket, that’s a problem, but AFAICT AWS (like GCP) is much better set up for tracking use and costs by project than OpenAI (or Anthropic), because its an enterprise cloud provider where fitting into how large organizations track things at multiple levels is as much a core competency as any technical feature, whereas OpenAI and Anthropic are AI technology providers that are much less mature as enterprise vendors.