Well, mostly what they would lose is the None/Security level. https://technet.microsoft.com/en-us/library/mt577208(v=vs.85).aspx https://technet.microsoft.com/e

Well, mostly what they would lose is the None/Security level. https://technet.microsoft.com/en-us/library/mt577208(v=vs.85).aspx https://technet.microsoft.com/en-us/library/mt577208(v=vs.85... has a description of the levels. The minimum for Open License is only five copies BTW.