That's extremely surprising.
I see two possible explanations (both of which may apply):
(1) You're getting the cloud servers for a remarkable discount, which, as other commenters mentioned, may not last if you don't put in the engineering effort to be vendor-agnostic (though I'm not sure I agree it's as huge a cost as otherwise implied).
(2) You're grossly over-paying for your current environment. Given what I know about the purchasing habits over merely large (nowhere near the size of F50, mind you) companies and, more importantly, the pricing of "enterprise" hardware and support, this seems likely.
If the second is true, then I expect you could gain the same savings, if not more, by implementing your own "private cloud" by emulating the purchasing and ops habits of larger-scale startups or established tech companies (but not yet so huge as to be too custom) who run their own hardware.
You'd still have to retrain and put an end to manual configuration, but I expect that would ultimately be welcomed. Some might be able to keep their jobs almost as-is.
What likely would not be welcomed, and therefore might make it impossible to do, is the political upheaval, since you'd have to put the kibosh on buying expensive, brand-name gear, all but a few bare-bones service contracts, and the level of enterprise sales perks that the decision makers have come to expect. You'd probably have to hire someone who knows how to be frugal like that from an engineering/ops standpoint for architecture/purchasing and is willing to work for such a large company and isn't already employed by FAAMG.
I see two possible explanations (both of which may apply):
(1) You're getting the cloud servers for a remarkable discount, which, as other commenters mentioned, may not last if you don't put in the engineering effort to be vendor-agnostic (though I'm not sure I agree it's as huge a cost as otherwise implied).
(2) You're grossly over-paying for your current environment. Given what I know about the purchasing habits over merely large (nowhere near the size of F50, mind you) companies and, more importantly, the pricing of "enterprise" hardware and support, this seems likely.
If the second is true, then I expect you could gain the same savings, if not more, by implementing your own "private cloud" by emulating the purchasing and ops habits of larger-scale startups or established tech companies (but not yet so huge as to be too custom) who run their own hardware.
You'd still have to retrain and put an end to manual configuration, but I expect that would ultimately be welcomed. Some might be able to keep their jobs almost as-is.
What likely would not be welcomed, and therefore might make it impossible to do, is the political upheaval, since you'd have to put the kibosh on buying expensive, brand-name gear, all but a few bare-bones service contracts, and the level of enterprise sales perks that the decision makers have come to expect. You'd probably have to hire someone who knows how to be frugal like that from an engineering/ops standpoint for architecture/purchasing and is willing to work for such a large company and isn't already employed by FAAMG.