Jeff Coons comes up with his own ideas and compositions and his staff of artists manifest them. Mark Kostabi (
http://www.kostabi.com/ ), on the other hand, hires people to do every aspect of the work from concept to signing the painting and is proud of the fact he has nothing at all to do with its production.
I saw a documentary where two people, who had just bought a painting of Kostabi's for 10s of thousands of dollars, thanked him , at his opening, professing gratitude for the work he created. He in turn told them that he had nothing at all to do with the painting and actually showed them great distain.