I really don't see DOIs as the problem here. They are just catalogue numbers, not an archive or repository. The DOIs are still permanent, but their resolvers m

I really don't see DOIs as the problem here. They are just catalogue numbers, not an archive or repository. The DOIs are still permanent, but their resolvers might not be. Copyright problems definitely makes that harder to fix, but again, I don't think the DOI is the problem here.