The problem is, if the supporting organization is not the same as the developing organization, there's no obligation for the developing organization to respond to feedback from the supporting organization -- the developers are free to accept or reject feedback as they deem fit.
There could even be a conflict of interest: the Kubernetes developers are primarily sponsored by Google, which has an interest in promoting its own cloud offerings over those of their competitors. (Note the relative difficulty of setting up K8S on EC2; even if you can set it up, K8S assumes the ability to create a network topology that's unique to GCE; otherwise you have to use overlay network hacks.)
There could even be a conflict of interest: the Kubernetes developers are primarily sponsored by Google, which has an interest in promoting its own cloud offerings over those of their competitors. (Note the relative difficulty of setting up K8S on EC2; even if you can set it up, K8S assumes the ability to create a network topology that's unique to GCE; otherwise you have to use overlay network hacks.)