Every town has one of those businesses that is much like a certain chocolate factory owned by one Mr. Wonka - "Nobody ever comes in, and nobody ever goes out." So one has cause to wonder how they stay in business. Funny thing is, businesses like these, as a general rule, seem to go on functioning for years and years.
One such business was the House of Lights in my hometown. It was, as you may have guessed, a purveyor of lamps and other lighting fixtures near one of the parochial schools in my town, and it had been around for as long as I could remember. I lived in my hometown for the first 18 years of my life, plus another 5 or so years after graduating from college (so from birth to age 18, then 22-27), and that business was still going when I left. I have no idea if they still exist, but in all those years, I never saw anyone enter or exit the House of Lights. My aunt theorized that they had a side business running numbers, or else a gambling parlor in the back.
Ever have one of those mysterious businesses where you live?