have a look at akash.network they are close. asked the team about supporting k8s clusters a lot and main issue is securing api access as you could manipulate a lot with that and still need it though...
I tried to find a recent copy of their whitepaper — there is no info I can find about how they actually secure these nodes, it just looks like a marketplace for kubernetes deploys, which sounds incredibly dangerous as providers have direct access to the running containers.