For some regions and values of "up". Let's not forget the temporary extreme rate limits, the day outage in Australia, the 2fa failures in multiple regions, the week of stuck/repeating timelines, the "something went wrong" pages, and a few smaller issues.
> Have you run your numbers?
Yes, finally. This has nothing to do with cloud, you may have a chance for some infra savings, moving whichever way makes sense for you. Run the numbers periodically. "#CloudExit" is dumb.