My beef with K8s (and to be clear, it’s the leanest cut of beef from the deli - so not much substance to it) is that unless you pay someone else to manage the Control Plane for you, you’re not only going to need to upskill your workers on K8s itself but also administering the components of the Control Plane, like HA, etcd, storage, network plane, etc.
Compared to standing up literally any Linux distro and KVM, K8s remains an overly complex PITA to get off the ground and integrated into an org on the cheap/free. In that area, it handily loses to even Microsoft Hyper-V in the “just get us going” category of business adoption/velocity.
I’d really, really like to see K8s more streamlined for initial deployment than it is. It’s getting better, but I generally still have to grudgingly recommend a premium, managed control plane for any serious deployment.