We planned a migration to move from 4OD instances to one on prem machine and we guessed we’d save $1000/mo, our builds would be faster and we’d have less failures due to capacity issues. We even had a spare workstation and a rack in the office that so the capex was 0.
I plugged the machine into the rack and no internet connectivity. Put in an IT ticket which took 2 days for a reply, only to be told that this was an unauthorised machine and needed to be imaged by IT. The back and forth took 4 weeks, multiple meetings and multiple approvals. My guess is that 4 people spent probably 10 hours arguing whether we should do this or not.
On AWS I can write a python script and have a running windows instance in 15 minutes.