I think a business guy is different from an artist. They walk different paths. Artists create the best outputs when they're having fun. And when a good business partner supports them from the side, it creates great synergy. When someone's trying to do both, I think the music gets bad and the business gets bad, too.
The Sufis advise us to speak only after our words have managed to pass through three gates. At the first gate, we ask ourselves, 'Are these words true?' If so, we let them pass on; if not, back they go. At the second gate, we ask, 'Are the necessary?' At the last gate, we ask, 'Are they kind?'