Amazon does not isolate AI profit, but AWS already earns large operating income while selling the compute, models and managed services that AI customers require.
Amazon S3 turned highly scalable object storage into an on-demand web service, separating durable data from owned hardware and making capacity, durability and consistency part of a cloud API contract.
Amazon EC2's 2006 beta exposed virtual machines through a web-service interface with rapid provisioning and usage-based billing, helping turn infrastructure capacity from a procurement decision measured in servers into an API-driven resource measured in instance-hours.