> Sure. You just need more people to keep an eye on what your consumption rates are. Or to handle access control systems or manage service accounts and client certificates, ensure firewalls, additional tooling around firewalls to ensure things aren’t getting exposed outside. Countless cost projections on top of a complicated billing system.
At a certain scale, you need all these things with internal clouds too. Resource provisioning, basic security, and managing "insider risk" don't just go away when you own the infrastructure.
How so? Presumably someone with an internal 'cloud' needs someone to be responsible for a large kube cluster, to handle a uniform way to do scheduling/resource management, etc. Having an engineer who knows how to do this in AWS doesn't seem more expensive than an engineer who can roll their own internal 'cloud' system...
At a certain scale, you need all these things with internal clouds too. Resource provisioning, basic security, and managing "insider risk" don't just go away when you own the infrastructure.