Well for the most part no one see the other side of hackers.. kevin mitnick... once wanted by the FBI for breaking into huge companies like Sun, motorola, Nokia... is now on the security side of things.. Bad turned good.. runs a security firm that charges for hack attempts and what to do to prevent them.. http://www.mitnicksecurity.com/
true.. but if you are talking about hackers they why they are refering to them, black hat... they do.. they hack large corps.. and government.. but it still does happen.. and most of the time to get to those large corps or government servers and what not.. requires the use and hack of a few personal pc to cover their tracks..
It looks like you pulled that info from wikipedia on hackers..