Most high end lounges have somewhere you can nap, at least. I have this one airport where I usually have a few hours before my final 50min flight to get home, and I always spend those hours in a lounge so I can get a nice shower and somewhere quiet.

Might be that the net revenue per hour of a restaurant will always win, unless you charge $50 per ticker for a movie.

Seriously. I could have watched Lord of the Rings.