I've lived in this area (Maryland burbs of DC) since 1986. There are some restaurants that have been around since I moved here, or before, and I don't know a soul who has ever been to any of them. Yet they survive in what is always a brutal business. A few years back, out of curiosity, I went to one of them - Les Vieux Logis on Old Georgetown Road. Old was the operative word. We were the only people under 80. Tommy Joe's is another. Trattoria Sorrento. Aji Nippon. Steamer's (I tried this one 20+ years ago; I am astonished that they are still in business). Guardado's.
I'm not saying that these places are not good. I'm saying that in all these years, knowing all these people who eat out all the time, I don't know of anyone who has been to these places, which seems sort of improbable.
Anyone else notice this kind of place/phenomenon?