Gotta agree somewhat with Quickerblade. Even if 50 cent often comes off as a gangster goat, he _IS_ a lot smarter than most of his compadres from "the hood". He seems to seize opportunity and create shit for himself (even when he sold drugs, he was pretty entrepreneurial and he built himself up according to the film about him at least, but Debussey tends to believe that).
Now he has made sure that his earnings are invested soundly, and he has gotten great returns on his investments.
Regardless of how a man talks, you can see how he really is from his actions, and 50 cent has done a lot of smart things to get himself to where he is, it is NOT just a coincidence.