David Eldersveld explains what orphaned workspaces are in Power BI:
One of the newer features in the Power BI Admin Portal is the ability to view all of a tenant’s Workspaces. As I was browsing through the collection of workspaces, I noticed several marked as Orphaned. What is an orphaned workspace, and how does it occur?
I was expecting orphaned workspaces to be a new thing where you pay for an Azure service using a distributed blockchain technology called Gruel (or maybe Grool).