It has nothing to do with 50, the thugged out generation is gone/grown up breh, and so are most of the white girls who were into that sh*t in college/high school. 2003 was 10 years ago.
You need to take a walk in most of your major hoods and see what's goin' on. Jeezy, 50, Game, etc all these gangsta rapper types are not gonna move units anymore. Chief Keef blew off a few singles, he's gonna come back down to earth soon enough. You have to make hipster/c00n/faq music in order to sell, and these days it's still pretty hard to sell big. You are better off appealing to your core fan base and keep it moving.