These people are leveraging everything in their power to fuck over millions to save themselves money. We put them away for 5 years and they still come out billionaires in the end, why wouldn't they do it?
A jail sentence for such a well positioned white collar criminal is probably comparable to a retreat lodge. Such an institution certainly doesn't have prison bars and a fenced perimeter because it is low security and has a special privilege.
So what - somehow somewhere someone will have the power to jail these white collar criminals for their entire life, but they don't have the power to make a 5 year jail sentence more uncomfortable?