I think that the unix philosophy of focused and relatively simple tools that are easy to glue together is a better way to future-proof. Yet to do that you need to have a stable substrata to provide the basis of composition. In k8s case it seems that k8s _is_ the basis where the composition is to happen upon.
In conversations, I often compare the Kubernetes API to the Linux Kernel API (as analogy) - both provide primitives we kind of "agreed on" in the industry. I hope the Kubernetes ecosystem will flourish in the same way as the Linux base.
