Checklist for Justifying Free Software
In a few years viewing source code within the major components of software infrastructure will probably be a routine way of doing business. In the meantime it seems that the only reason managers want free software is because it is free (as in free of costs). That's not a good reason in itself: in the long run there are compelling reasons that robust, mission critical infrastructure software should be made free software.
Spence, Malcolm D. Free Software Magazine (2005). Articles>Software>Open Source