I dunno, I have been around and I never seen an on-prem infra being more reliable than your average cloud.
The only difference is that when on-prem goes down you can shout to your infra engineers, when cloud goes down you shout at your enterprise cloud representative. The first is more effective, but even with that it still doesn't achieve the same reliability and disaster-recovery of your average cloud provider.
The only difference is that when on-prem goes down you can shout to your infra engineers, when cloud goes down you shout at your enterprise cloud representative. The first is more effective, but even with that it still doesn't achieve the same reliability and disaster-recovery of your average cloud provider.