There is no motivation for that. White collar criminals, especially the big ones are generally well connected, have powerful acquaintances, often know dirt on o

There is no motivation for that. White collar criminals, especially the big ones are generally well connected, have powerful acquaintances, often know dirt on other people and mostly steal from either little fish and government (if they steal from corporations, there is often fault on the side of the corp. too and no one wants it to be very public so stocks dont fall even more) and their crimes usually benefit other rich/powerful people (often stockholders), it would be rather inconvenient to air such dirty laundry. On the other hand pirates have no noteworthy connections whatsoever and mostly damage big corporations who have money to lobby for their punishment.