A directory connecting freelance and independent archivists with small museums needing exactly this kind of short-term, project-based cataloging work would fill a real staffing gap that traditional museum job postings, built around full-time roles, don't address. Revenue is a placement fee paid by the museum, or a subscription for archivists wanting priority visibility on new project postings. What I'd research first is actually the museum side's budget reality, since many small museums operate on genuinely thin margins, and the platform's viability probably depends on whether grant funding exists that museums can point to specifically for cataloging projects like this.