[hvidgaard]

They simply underestimate the ops cost, and often focus on the monthly cost. The thing that cloud providers like AWS are good at, and IMO, the only reason you should choose them, is when you have highly variable loads. Dynamic scaling is something only they can do because they have such a massive scale. Even if you're relative small and cannot justify hiring a sysadmin, there are plenty of consults out there you can hire.