Then some of us must be illiterate
According to
http://pve.proxmox.com/wiki/Package_repositories:
"The pve-no-subscription repo can be used for testing and non-production use.
Its not recommended to run on production servers as these packages are not always heavily tested and validated.
As the name suggests, there is no Proxmox VE Subscription Key needed to access this repository."
Look, I believe that most of the community is supportive of your development efforts, and we understand that providing the download bandwidth and support requires financial resources.
But I don't believe that attempting to monetize updates is the way to go. Perhaps non-subscribers would prefer limited access to the forums and less support. I don't believe in crippleware either.
I would prefer to pay a fixed yearly fee that gives me full access to the forums, unlimited license, better documentation, video tutorials, and some handholding.