Ok extra context from your friendly neighborhood Master's Degree holding archivist:
Archives are "curated" according to what's called a "collection policy". That means a policy that dictates what you collect; usually along a theme. For example at the university I used to work at the collection policy was to collect archival material pertaining to the local area and its history/important figures. At the historic home I currently work at, the collection policy covers materials pertaining to the person who lived at the house.
AO3 collects fan works and original writing. That's it. That's how they "curate". They don't allow a copy paste of published works (for legal reasons) and they don't allow commissioned works (for legal reasons) . Everything else that falls under fan works and original writing is part of their collection policy. Everything. That's how archives work.






















