URL doesn't have an interest in building brands outside of their own. Building an rappers brand outside of battling only makes them more expensive. For example URL's edits helped Lux become a household name but that doesn't help them in negotiations.
Consider the fact that Beasley was a music industry guy BEFORE battle rap. He doesn't seem to have interest in getting back in the music business.
URL dropped a promo with Lux on their own Youtube. They are dropping battles to bring people back to their channel, and dropping promos for NOME. That's the best way to handle it because battlers aren't interested in promoting independently.
LOL the URL won't help these guys build their brands on their own platform, that has over a million subscribers. Why would they help these guys get on other platforms?
The URL could create content interviewing these guys and having them freestyle, but that would be promoting them. As you stated, their only hope is for URL to promote their battle, white indirectly promotes their brand.
At some point, URL said fukk these nyggas.