It's less and less relevant, a lot of Google things can run on the current limits for k8s: 5000 nodes / 150k pods in a single cluster. Not everything at Google

It's less and less relevant, a lot of Google things can run on the current limits for k8s: 5000 nodes / 150k pods in a single cluster. Not everything at Google is large, many other compagnies run very large infra like Google scale on Kubernetes using multiple clusters with federation / regions ect ...