How do you vet these things without stifling creativity and accidental serendipity? You don't. You have to take the mostly shit ideas and eventually one sticks even if it sticks like shit. The vetting will have a detrimental effect of the types who can even come in the door AND it assumes people know what works or what doesn't which is the overall illusion we have of "great ideas" that's why great ideas are only hindsight unless they are like inventing cheap fission or anti-gravity. Technology is evolutionary, meaning we don't control evolution, it just happens based on the environment, aka the mob's choice. Maybe pan handling robots spin off to charity assisting robots or social fart sharing turns out to be valuable health data? We don't know unless its obviously popular. The messier the better.