The survey was about operational costs and revenue. Water cooler and coffee machine manufacturers don't market their products to be "smarter than people in many ways" and "able to significantly amplify the output of people using them"[1]. If these claims are true, then surely relying on this technology should bring both lower operational costs, since human labor is expensive, and an increase in revenue, since the superhuman intelligence and significantly amplified output of humans using these tools should produce higher quality products and benefits across the board.

There are of course many factors at play here, and a substantial percentage of CEOs report a positive RoI, but the fact that a majority don't shouldn't be dismissed on the basis of this being difficult to measure.

[1]: https://blog.samaltman.com/the-gentle-singularity