I dont think you can take what Floyd does as far as putting guys on his roster as face value. One day I believe, we will see a different side to Floyd be revealed. That "Money" a$$hole persona was just a character he created to make him the biggest grossing boxer of all time. It worked.
How camps are formed is different. Most of these guys, especially any ones of color usually scoop up guys they have some sort of bond with. I think a lot of personal feeling goes into it. The Mayweathers have long surrounded themselves with mediocre talent. Like the Cornelius Lock's, and what was that guy that fought the dude and lost then fought rematch on HBO and got stopped? Wes Ferguson....got KOed by Edner Cherry on undercard to Floyd vs Gatti.
He gravitates towards guys like that and word is he is extremely loyal to these guys and they love MP because they get treated right. Mayweather the promoter isnt nearly as abrasive as the fighter.