That's definitely not true. There are only a few dozen unicorns, and hundreds of self-sustained businesses that "print" small amounts of money. If you join any large city's small business CEO groups (in NYC, SF, Toronto, London, etc.) you'll find a lot of one-person, bootstrapped companies that just run themselves.
It's not easy, but there are dozens or hundreds in many large cities.
It's not easy, but there are dozens or hundreds in many large cities.