> compelling in any way, whether on sound quality, convenience, device size, cost, robustness, complexity, usability, or versatility compelling for DRM rights

> compelling in any way, whether on sound quality, convenience, device size, cost, robustness, complexity, usability, or versatility compelling for DRM rights holders, and all the manufacturers are trying to setup their walled garden 'content stores' and need to make rights agreements with content producers..