A final problem with relying on some-rights-reserved licenses for implementing copyright heterogeneity is that these licenses may not be perceived as being a legitimate or enforceable part of copyright law. For example, CC and open source software licenses are often flagrantly violated. n57 And the association of these licenses with the "free culture" movement may deter more mainstream creators from [*709] using them. n58 Because the typical affected rights-holders have limited economic resources and legal know-how, n59 incentives to sue over infringements are weak. This greatly limits the risk associated with infringing the terms of the licenses, making them less effective as legitimate mechanisms for choosing alternative rights schemes.