They may have only mentioned Bitnami images, it's been awhile.
However, I think your rationale begs a question: how much of "the automation and services that major cloud providers have" (scare quotes only for readability) is needed by runners of metal? For instance, autoscaling can be mooted by overprovisioning, which would still incur only a minor cost increase. Multi-region is similarly cheap. A lot of the remainder seem like productized functionality that is fairly implementable locally if desired.