I've always done research, but there's usually a lot of hugely relevant information that's not going to be very publicly available. Oculus is a bad example - most companies are not high profile, in a space with few other significant players that has been romanticized by sci-fi media for decades. Of course, there are always going to be idiots blindly excited by what they imagine, but those aren't the good hires - the best hires learn what they can, then pick the best option, then pursue it passionately.