K8s mostly provides that layer. What’s missing is for cloud providers to implement all their services as k8s resources. Many already are, like all the networking stuff, VMs, storage and loadbalancers. I think it’s missing things like an object or kv store, sql databases, etc. won’t be surprised if they eventually make their way there. But like everything complicated, you’ll end up with people taking dependence’s on various vendor specific behaviors or features.

f you were trying to unify cloud providers existing manages services and consume them as APIs over the internet, you would begin by defining what that API is, not adopt an existing vendor API. And that’s what k8s did.