We don't know what happened to OG Loc after the mission "Cutthroat Business". So let's just use our own imaginations.
My prediction: After OG Loc was sued for stealing Madd Dogg's rhyme book (it was really CJ), he lost all the money he made, as well as his career as a rapper. So he was left back on the streets dirt poor. Then he encountered a number of Vagos and they all shot him dead as reprisal for killing Freddie in an earlier mission.
So what are your predictions on what happened to OG Loc after that one mission?