The restaurant industry divides itself into four classifications - quick serve (Wendys), fast casual (Chipotle), Table Service (Chili's) and Fine Dining (Ruth's Chris). I can see e-menus making headway in Table Service spots where people are usually in more of a hurry, might have kids, and the restaurants don't always have the best servers. I can envision wine menus in Fine Dining locations.

Most restaurants focus on keeping costs low even more than top-line revenues, so my guess is an innovative business model might be needed for a wide deployment. But nothing wrong with a little disruption in this space.