I would be happy to.
First and foremost, the list is a database that is known within the federal government and is used as a reliable source of information by federal procurement officers. Therefore, it would be advantageous for a business to be registered on that database, because it would raise awareness of that business and be an easier conduit by which federal procurement officers could reach that business to award a contract.
In addition, registration through the indigenous business database is also supported by education components from ISC personnel working with the businesses to ensure that business could best understand the federal procurement process and the means by which it can be most effectively navigated.