One approach would be to look at how permissions, rights and responsibilities work on Wikipedia/Wikimedia projects. See for example user access levels.
I think that in addition to basing it on how much people are contributing, it could also be based on what kind of rôles they are playing, etc. Not sure if that’s making a lot of sense, but a broad overview would be to also take into account how much people are contributing to self-management as well as the dataset.