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UK government trial of Microsoft's M365 Copilot finds no clear productivity boost
(www.theregister.com)
This is a most excellent place for technology news and articles.
You assume the average usage is representative of the actual usage. You averaged the actions over the time period, nothing's says the users didn't performed the averaged 72 actions within the first three days or any time restricted window within the whole period of time and got bored with it seeing no or low value.
It's also possible a handful of power users use it a ton and found value, while the quiet majority only used it a few times because they were required to and didn't see value.
We need more details to draw conclusions. For example: