They likely have no idea where he lives. If he were to say, "Look, I live ___ blocks away from you. I'd love to buy you and a coworker lunch and you can watch m

They likely have no idea where he lives. If he were to say, "Look, I live ___ blocks away from you. I'd love to buy you and a coworker lunch and you can watch me build one -- I'd like to avoid having documentation of my process, as that's a competitive advantage for me", he might get some traction. Probably not, though, if the emails are that much like form letters.