Yep, too many artists don't have ownership of their masters and don't plan ahead.
Yes, the rap world ought to take notice of this. There's a boatload of money being made and the rappers themselves get very little of it. In fact, most of the jewelry they wear is *leased* to them by the record companies! They are given a per diem expense account so that they may maintain the lifestyle that their image demands. Their cars are leased and their homes are leased. Their careers are short-lived and many of them are going to wind up back on the streets dealing drugs again, or dead or in prison while the executives and agents get rich of their so-called "music."