That only counts if the unique selling proposition is that AI are better suppliers or customers than humans.

What is more likely is that people enjoy the novelty of the experiment, which is not something that will be reproducible for long.

If the transactions the AI make are thus influenced, then the study merely demonstrates people like novelty, which is already well known, and says nothing about whether AI can sustainably orchestrate a business.

Only counts if the AI did it. This was a human, who recognized a unique selling proposition ("store run by AI") and capitalized on it.

The AI didn't recognize anything. It didn't come up with the project or publicize it.