Oh they have and are; but what is the business case open source such a wrapper? Wouldn’t you just host it on your own hardware and basically be another Heroku? This kind of software is complex enough it would take corporate backing (either an industry group or VC backing) so it’s probably not getting built unless there’s a business case.
Even Google only released K8s because they thought it would push people towards GCP — which it didn’t because it was too easy for AWS to implement a similar service using Google’s open source tech. The open source freemium model for infrastructure tech is pretty much dead as a result of this kind of activity.
The wrapper can still be something self-hosted. There will always be SaaS/PaaS/IaaS abstractions out there for just about everything; even MySQL. The idea would be for someone to be able to very easily self-host something that's as simple to use and configure and interface with as AWS EKS or Google GKE.
I have no idea what business case there'd be to open source it. Maybe some open source devs with former experience at a big company will create one just for fun after they leave the company? Who knows. It'll probably happen eventually, by someone, either way.
Would you do your day job “just for fun” after you just quit?
The reality is that most of this technology — especially around infrastructure — has become so complex at scale that the tech strategy and the business strategy are the same thing. So infrastructure software has to match your business architecture which is largely dictated to a technology org. Which is why “tech ops” these days is largely just “ops” — the technological complexity is a reaction to increased business sophistication, not the other way around.
Me? No. But some people seem to like to do that. And some people do seem to be genuinely very passionate about infrastructure and such. Kubernetes can be applied to a lot of different business and technological architectures, I think, and a simpler alternative could be similarly general.
Even Google only released K8s because they thought it would push people towards GCP — which it didn’t because it was too easy for AWS to implement a similar service using Google’s open source tech. The open source freemium model for infrastructure tech is pretty much dead as a result of this kind of activity.