Who's finance team likes usage based billing? It makes sense for elastic use cases and is definitely "fair", but there are a lot of issues: Forecasting is hard. "dev team had an oops" situations.
I had frog getting boiled situation at one job that was exactly the process described in the posted article: usage of the cloud data warehouse grew as people trusted the infrastructure and used more fresh data for more and more use cases. They were all good, sane use cases. I repeatedly under-forecast our cost growth until we made large changes and it really frustrated the finance people, rightly so.
