There are companies like CoreOS, Heptio trying to provide good Kubernetes support for AWS. Personally, I don't think all cloud providers _have to_ provide native Kubernetes support as it’s designed to be something users can roll out on their own regardless of the environment, or purchase services from companies in the ecosystem (like those I mentioned earlier). Today, there are many tools like kops that integrate well with AWS ecosystem and make it easier to install Kubernetes on AWS, which makes me think that users are happy enough without an official support from AWS. And that shows the strength of the community.