the attendees are investing real time - just not an entire weekend. both myself and @neosavvy - the creators of the event - are hackers who work full time. this event is aimed at people who are curious to work with others in more than just a hacking sense. the aim isn't just to involve developers, but also individuals who have skills in other industries, such as robotics, media and biotech.
what happens to the products is whatever the teams want to do with them.