Cloud overall has been positive, but it's very very expensive. There is now a big push towards EKS to save costs. They are trying to save a lot on Datadog also. Concourse license will not be renewed beyond this year, so that's another small save.
The most expensive thing has been the time and effort spent by developers due to horrible pipelines and bad Concourse implementation. The CF team has kept too much control to themselves which is painful for teams.