Inherently there are always going to be financial motives. I often compare security to a bit like studying theology: there's a whole lot of propositions and very little evidence to support any of them. As an academic, my work has always been about getting concrete research and data behind this. As I point out, some of the links are more tenuous, or more poorly understood, than some individuals put forward.
On March 31st, 2015. See this statement in context.