How does it provide a more economic, time/energy more efficient, simpler solution than a relational market/db/service, from the implementation point of view? (as, either way, this will require implementation, marketing and support towards users by some intermediary company, be it the venue or something equivalent to TicketMaster)<p>Concert venues and artists are already working hard towards making touring more sustainable (not only, but also energy-wise), the time/energy efficiency bottom line has to be remarkable.