There is a corner store somewhere near you with a piece of paper taped to a machine.
The paper says OUT OF ORDER. It was written with a marker that was running out of ink. It has been there for eleven days.
The owner is annoyed but not alarmed. The machine earns maybe a couple hundred dollars a month in fees. Losing that for a week and a half is unpleasant, not fatal.
The owner is wrong, and the way he is wrong is one of the most instructive mistakes in small business.
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That machine was not a two hundred dollar a month asset. It was the reason a meaningful share of his customers walked through the door at all. And when it stopped working, they did not stand there disappointed.
They went to the store two blocks away.