Great technically, but leaves out the social aspect. People are conditioned to think that if they buy anything, they are entitled to sit at a table for as long

Great technically, but leaves out the social aspect. People are conditioned to think that if they buy anything, they are entitled to sit at a table for as long as they want. Putting a meter on that right isn't going to go over well, especially if I can just go across the street to your competitor and work as long as I want. So the key would have to be if all the other coffee shops started turning off wifi and covering their outlets, or it would have to be a really great place to work.