I don't think switching will be the answer, but rather federation. We are currently deploying new services on Kubernetes and we can run isolated Kubernetes clusters on either GCP (not just GKE), or on AWS.

While we aren't to the point of using cluster federation for production yet, this is the next logical step. I see a, not to distant, future where we have cluster federation across on premise, GCP, and AWS clusters.

If, like us, your all in on the container Kool-Aid, then I believe the future looks a lot like policy based Kubernetes scheduling across federated clusters. Policy factors like geolocation, spot pricing, resource requirements, SLOs, etc... are all configureable to the app developer and transparently effected by pluggable Kubernetes schedulers.