OSF publishes a full season program and a full season critical guide in addition to playbill one-sheets for each show. It really, I think, fills the need without scaring off the theatregoer who's just looking for a little culture and not a broad academic outlook. OTOH, I think that kind of material SHOULD be available to everyone, regardless of wanting to pay for it. Which is also why some companies are moving into having critical information available online. For me, while I absolutely believe that dramaturgy should be taking the internet by storm, I think it's problematic not to have the material available at the moment when you're seeing the show. If one has to think about it when one gets home or the next day or whenever, I feel like it gets less and less likely that one will look at it at all.