The cost of doing business
"proactively powered down a small subset of selected compute and storage scale units, to avoid damage to hardware."
So the combined penalties that Azure might fork out for an outage on their cloud is less than the cost of a selection of compute and storage. Nah. I reckon they powered down that hardware because the data on that hardware might have become irretrievable. Hardware can be replaced. Data is a different liability altogether
Sounds like we haven't heard the whole story. Mind you after Azure token signing keys were exfiltrated earlier this year, we are getting used to not hearing the whole story from Microsoft.