The Incubator Arts Project is, you guessed it, an incubator for artistic creation. It was started by artists in 2005 as a program of the Ontological-Hysteric Theater to support experimental works by developing artists. As the program grew and thrived, unfortunately the theater it was started under did not. When the theater closed, the Incubator Arts Project became a part of the programming for another organization, Performing Artservices Inc. Why start a full-fledged business when you can benefit from becoming a part of one that already exists?
It is not the same, but this makes me think of the Nonprofit LLC.