Yes, when I try to explain this to people, I always explain the bus factor concept: how many people could get hit by a bus until it becomes critical to run your business ! Running in the cloud allows you to avoid this problem, there will always be an oncall tech in the DC of your cloud provider, which is very hard to organize for an on prem system !

I guess The dudes can always give remote access to someone he trusts, but at the end of the day if a disk fail somebody got to go switch it