I use the term "business" loosely, but I once did graduate research with a professor who was in the process of trying to get a major auto manufacturer to invest in our lab. They liked us, but wanted an example of some of our work. So rather than directing them to some publications of ours, my professor gave them a zip file containing all of our recent unpublished research, including the basis for a patent application.

My professor was shocked when they just kept it.