I agree, most businesses are very small. Large businesses and especially very large businesses are the exception.

4.7M of the 8M US businesses have <5 employees.

https://www.census.gov/newsroom/stories/small-business-week....

Starting a business requires little more than filing incorporation documents with your state.

Growing a business to dominate a market and get crazy rich may require outside funding, but growing a business to support and maintain your individual lifestyle does not.