Pirate radio stations created culturally significant content that's now being lost. Fans would pay to access these archives, but current preservation efforts are scattered.
Create a hosted platform specifically for radio archivists to upload, tag and monetize their collections. Include donation systems and licensing tools.
The core users would be former pirate radio operators and media historians.
Start with basic hosting and a paywall, then add more sophisticated rights management.
Biggest risk is unclear copyright status of many pirate recordings.