Delusions of Grandeur
The Black Sun is a a crime syndicate that has been around for generations. In the chaos caused by the Clone Wars and subsequent rise of The Empire, the organization grew to rival that of the Hutt Cartel.
While sizeable, The Black Sun does not control territory and planets like the Hutts. Rather, they work underground and within currently existing infrastructures. This allows them to operate in the inner rim and core worlds in a way that the Hutts cannot.