X used to own a bookstore. It was good enough to put him in middle class. Then the culture changed, it was easier for people to read reviews online and buy, than to shop in book stores. His shop has to close down, now he drives for Uber and tries to make ends meet. He is no longer in middle class. Not homeless, but I'd imagine if there are more competition for unskilled labor, more people would be squeezed into homelessness