The current sense of Incubators are a bit different, they look for groups with ideas, take them under their wing for a fraction of stakes, and let them go. The ideas always come from the outside.

What I am saying is, even the ideas are brainstormed inside. Imagine 100 great minded people every month sitting down and choosing a good idea (that originated from the inside), and all of them putting their efforts in to implementing it. You do that every month.