A system and methods of digital rights management for plural device domains that adapts in response to external use data. Domain size parameters of a target domain that includes multiple receiving devices are determined. The domain parameters are compared to a domain benchmark developed from external data. A risk index for the target domain is then generated and used to create content usage rights for controlling access and usage of digital content by the collection of devices within that domain. The system may include a plurality of information-gathering tools for collecting the domain parameters from a plurality of independent domains as well as from the target domain.