The thing is, you can buy your way out of most of these considerations by either renting colo space or renting managed servers until/unless you're at a scale where there are savings to doing it yourself. This is a commodity service with margins a tiny fraction of AWS' margins. Buying services at those levels instead of doing hosting on prem still nets you 80%-90% of the savings vs. cloud. Sometimes it nets you greater savings because it makes it easier to move your workloads to cheaper locations (e.g. for a small company in London operating servers somewhere with low energy prices and low property prices is hard; colo space reachable from London in often 30%-50% above what it can be like many other places in Europe, and so you'll find managed servers from providers like Hetzner is often cheaper than on prem if your company is in a location like that)