I don't think it's a question of raw intelligence so much as where the smarts are applied. Doing the crime and stepping back to put the crime in context and analyze the paths are two different topics and two different sets of behaviors.

As an analogy, as a developer I think it's pretty easy to write code that's bad in some way that you don't notice at the time. And that's even true if you are able to spot the same code as bad when, say, joining a new job.

Can't dig up the source but I remember hearing that it's often people that have an overly high value on having things immediately. E.g. thinking about the lifestyle they could live now with the money. They're acting irrationally from a long term perspective.