It's been my experience (15+ years as logistics engineer) that the cost associated with DMSMS forecasting cell as a product office task is cost prohibitive.  I work in a product office in Aviation and Missile Command (AMCOM) and we have a service from AvMC Engineering that we use to manage our obsolesence management program.  Its a much cheaper option that trying to put together the resources required to accomplish the task effectively and it's a government owned operation.  

The U.S. Army Aviation and Missile Research, Development and Engineering Center's Obsolescence Engineering team created a system called the Multifunctional Obsolescence Resolution Environment tool-database. MORE is a government-owned engineering analytical obsolescence and DMSMS management information system, maintained by AMRDEC.

We provide the system tech data package with the indentured parts list and they utilize a massive database to track all hardware and monitor the manufacturers of the products.  It works pretty well as long as we keep the TDP updated in their system.  The challenge is that often times COTS items like chipsets or circuit card assemblies go end of life with little notice from industry and we have to scramble to resolve it.