Agreed - but there are a lot of family businesses that do billions in revenue.
A few off the top of my head are Cox Enterprises which does 17B in revenue and is owned 99% by the family, SC Johnson which does 11B and my understanding is it's mostly held by the family, and Hallmark which does $3.8B and is held by the family.
We also could trace back family shareholders of large corporations who have gone public - Wal-Mart, Ford, etc.
