Yeah, WhatInThe is on to something. These heists are way too coordinated and precise to be pulled off without inside info. And what are you going to do with a trainload of shoes? You can't eat 'em. So, it's just not pulling off the heist that has to be coordinated, but having the connections ready to get the shoes sold to customers.
If we harness the energy and inventiveness of thieves, who come up ingenious, smuggling and stealing ideas, and put them into space research, we'd probably have a colony of Mars 40 years ago.