the cost of interia is nothing (with only friction showing you down) while the energy inputs to change interia can be quite high. In business this means that when you have a development department, sysadmins and end-users all familiar w/Windows the cost to maintain the current direction is obvious, known and already budgeted. OTOH, the cost to retrain development staff, IT staff AND end-users in a Linux environment is probably larger than the cost of the Windows licenses already on hand and due for renewal soon. So, unless you are focused on security, often develop code on your own or sell IT, Windows is the choice of inertia. In my mind it will take a major MS security FU to change the energy flow.

Todd