When your system goes down on AWS and your AWS admin is on holiday, you'll have the same problem.

What is your point?

Every team I have worked on so far, if using AWS you had 50-100% of the developers with the knowledge and credentials (and usually the confidence) to troubleshoot/just fix it/replace it.

Every team with dedicated hardware in a data center it was generally 1-2 people who would have fixed stuff quickly, no matter the size of the company (small ones, of course - so 10-50 devs). And that's with available replacement hardware.

I'm not even one of the "cloud is so great" people - but it you're generally doing software it's actually a lot less friction.

And while the ratio of cost difference may sound bad, it's generally not. Unless we're talkign huge scale, you can buy a lot of AWS crap for the yearly salary of a single person.

I don't have an AWS admin. I assume a $2.4 trillion dollar company always has dev ops on call?