Is a relational workload that requires four-nines-plus availability like Amazon is touting really something an organization would be willing to run in the cloud? Especially since that category includes a lot of personally identifiable data that legally can't be trusted to a third party. Wonder what kind of use cases they're aiming for.
Amazon's environments meet PCI standards and there are folks with PCI Level 1 companies running their infrastructure in AWS and storing credit card data there.