alt Hacker NewsNot everything is in the exponential growth model. Most small businesses in your town for example. Margins might afford an upper middle class lifestyle for the owner and that is a good enough business model for this company to last decades, even pass down through the family.
On the micro level, I agree. On the macro level, I don't know how viable those businesses will be when the wider economy is no longer growing exponentially (and frankly that may well be the least of all concerns).