Years ago I was making the case that instead of digging ourselves into the Amazon eco-system with S3 storage, EC2 instances, DynamoDB and various other Amazon specific cloud products... we should just host virtual machines and have everything in there using open source products. People looked at me like they saw water burning but that would have made the dependency on the US a lot easier to sever. Just move the VM's.
We can go with your idea, sure: a few months in, an Account Manager from the cloud provider shows up and says your bill could be reduced by 50% if you just adopt some changes, using their custom, super optimized tools (“minor changes” will be the mantra).
And now you have your own company looking back to you on how can they get those savings, people who don’t understand what a VM is and cannot differentiate salesforce from an elastic container, as everything is “cloud”, but heard “50% off”.