Isn't that called Scientology? though usually they just get the money and ditch the people. Look at Tom Cruise, John Travolta, even Beck, they are all long time scientologists, who have been before they were really famous, and at least 2 of the 3 (cruise and travolta, though travolta is more quiet about it) attribute part of their success to Scientology.

not knocking the idea, it would work, but it is already done, its basically an agent of sorts. and youd need to know all the right people to make them famous