Crazy thing is... both are talented artist with insufferable personalities. If you're trying to inquire why neither has progressed, you can point out multiple missteps in their career.
Wale was an insecure diva (Coles song about him, interrupting the Meek interview, basically being annoying when he could) and Azelia did have a lot of interest when she hit the scene. The user comparing her to a Doechii, hit it on the head. Go listen to Broke with expensive taste and get back to me. Yet, her personality is shyt. I can only imagine the outburst that lead to her getting blackballed and become a self hating escort for white men.
Wale was able to have a decent music career and his discography isn't bad, yet I understand the lack of appeal due to his movements.