I haven't read Taleb, but I have heard a few interviews of him where he got the opportunity to outline his ideas.

I think politicians in general have a tendency to overreact to adverse events, and often by doing things that involve signals of reassurance (such as security theatre) rather than steps to fix the problem. I'm open to the possibility that they don't do enough to prevent problems, but as a rule governments are very risk averse entities, usually preoccupied with things that might go wrong.