Open Source in this scenario is a bit of a canard. It doesn't matter that much. And cost is less of an issue either: the cost of an OS per person is about th

Open Source in this scenario is a bit of a canard. It doesn't matter that much. And cost is less of an issue either: the cost of an OS per person is about the cost of a single support call to IT, so if an OS can make things 'just that much easier' it's worth it. I think the most important issue aside from the direct comparables is switching costs. If you get tied into an OS, then there's too much leverage.