You clearly are uneducated about money. Its incredibly difficult to generate good returns, no matter if you have little money or many millions to invest. Poor people think its easy to make money from investing it if you just had a few million. If you gave these people 10 million to invest it would be all gone within 5 years from their horrible "investment ideas". What 50cent and JayZ are doing is incredibly hard, tough work and you shouldn't laught at their results. Getting rich is one thing, staying rich is even more difficult. Just ask Evander Holyfield, Mike Tyson, Rid**** Bowe, Shannon Briggs, MC Hammer etc.
Maybe those who didn't jump for what looked like quick-and-easy money did their homework. Roc Nation has promoted, what, ONE fight card? You'd put your future in their hands?