A Microsoft Exit strategy isn’t just a good idea, it’s vital. It must go a long way beyond a farewell to RedmondOpinion One of the dangers of stories based on big cash numbers is distraction. The numbers get all the attention, the bigger story behind them gets missed. The fact that at the current rate the UK state is likely on the hook for nigh on £9 billion over five years in Microsoft licenses is a sterling example. How we got here, and where we're going if we don't start planning a Microsoft Exit, is much more than a $12...