In the context of now prevalent Extended Virtual Enterprises and our information and knowledge based economies, Enterprise DRM (EDRM) has become an important technical means to address many security issues ranging from simple persistent content protection to more complex dynamic governed usage pattern monitoring. Information is a strategic resource requiring prudent management. Therefore, a better understanding of the strategic value and major drivers behind organizational adoption of EDRM is needed. This paper presents a case study carried out with three large Korean companies. While our initial assumptions led us to hypothesize that compliance management and regulatory frameworks would rank the highest among the drivers for organizational adoption of EDRM, our study found that Knowledge Management (KM) appears to be a leading driver. We also identified Inter-Organizational structure as an increasingly prevalent factor in the adoption of EDRM.