Cool idea-- people inventive enough to go down an entrepreneurial route would probably be interesting/compelling candidates for academic innovation.
I actually think that creating many interesting projects + one's corresponding Github would be a better metric than getting a Google (or even YC) acceptance letter. You want people who are constantly tinkering and thinking of new ideas/projects/approaches and inventing just for the sake of inventing.
If you go too entrepreneurial, you might also be selecting for students who might be more amenable to dropping out from the program and doing a start-up (which then wastes the resources/time that Jeff mentioned he had to give to every PhD candidate).
I actually think that creating many interesting projects + one's corresponding Github would be a better metric than getting a Google (or even YC) acceptance letter. You want people who are constantly tinkering and thinking of new ideas/projects/approaches and inventing just for the sake of inventing.
If you go too entrepreneurial, you might also be selecting for students who might be more amenable to dropping out from the program and doing a start-up (which then wastes the resources/time that Jeff mentioned he had to give to every PhD candidate).