Re: Why is the second part of:
Of course, I cannot exclude this happening but it is different than survivor bias.
How did they got caught? In each and every case it boiled down to: the sums didn't add up (often quite literally). This is irrespective of running or not. But most of them were still employed at the time of finding out - including the cases with a posh villa in sunny Southern Europe or a whole hotel (!) in North America.
Doing the big score at once increases the chance of getting busted quicker. Simply because the sums not adding up happens quicker.