Your note about 'proving intent is really hard' is kind of the underlying reason - white collar criminals tend to believe they will never be caught/convicted. So making sentences more severe for those who are caught and convicted doesn't actually impact those future criminals, because their calculations say there's no risk of it being applied to them.
Your note about 'proving intent is really hard' is kind of the underlying reason - white collar criminals tend to believe they will never be caught/convicted. So making sentences more severe for those who are caught and convicted doesn't actually impact those future criminals, because their calculations say there's no risk of it being applied to them.