I can tell you how vendors deliver a software solution that runs on Kubernetes: very poorly.

The needed tweaks, the ability to customize things, basically goes to zero because the support staff is technical about the software, but NOT about Kubernetes.

I am not joking: a recent deployment required 3x VMs for Kubernetes, each VM having 256 gigabytes of RAM; then a separate 3x VMs for a different piece. 1.5TB of RAM to manage less than 1200 network devices (routers etc. that run BGP).

No one knew, for instance, how to lower the MongoDB (because of course you need it!) resource usage, despite the fact that the clustered VMware install is using a very fast SSD storage solution and thus MongoDB is unlikely accelerate anything; so over 128GB RAM is being burned on caching the results coming back from SSDs that are running at many-GB/s throughput.