[slovenlyrobot]

The most common thing I've heard is "blast radius reduction", i.e. the general public are not yet smart enough to run large shared infrastructures. That seems something that should be obviously true.

People had exactly the same experiences with Mesos and OpenStack, but k8s has decent tooling for turning up many clusters, so there is an easy workaround

[yongjik]

I still feel like that would only work in very niche cases.

I mean, if people aren't smart enough to run a large shared infrastructure, how can I trust them to run a large number of shared clusters, even if each cluster is small. The final scale is still the same.

[iampims]

Updating 100 clusters bares less risk than updating a single giant one.