I've partnered with models to help make them money.
I've partnered with my old college professor in Australia, and a friend of his, to guide them in making a site. We signed all the legal paperwork and I got paid a retainer fee up front. In the end they didn't have the work ethic to move very far forward, and I was only there to advise and guide, not do the work for them. They ended up giving it up and all on good terms.
For other work I hire people who are better then me at what they do, that's worth paying for