That's a good question. I think it's fair to call some of the true cloud native services an OS, in that you are loading programs into a framework, which stores

That's a good question. I think it's fair to call some of the true cloud native services an OS, in that you are loading programs into a framework, which stores state in a particular cloud-specific API database, and storing data in cloud-specific API objects (S3). I was thinking more about the lower level though; that is, the OS of the bare metal.