The KPI problem is systemic and bigger than just Gen-AI, it’s in everything these days. Actual governance starts by being explicit about business value.

If you can’t state what a thing is supposed to deliver (and how it will be measured) you don’t have a strategy, only a bunch of activity.

For some reason the last decade or so we have confused activity with productivity.

(and words/claims with company value - but that's another topic)