They don't mention any extra costs for people to manage the on premise setup. I mean its probably still a savings for them but it seems weird to leave that out.
It's because there aren't any additional people, the ones who managed the cloud resources now manage the on-prem resources:
> "We've been out for just over a year now, and the team managing everything is still the same. There were no hidden dragons of additional workloads associated with the exit that required us to balloon the team, as some spectators speculated when we announced it."
MaKey|1 year ago
> "We've been out for just over a year now, and the team managing everything is still the same. There were no hidden dragons of additional workloads associated with the exit that required us to balloon the team, as some spectators speculated when we announced it."