Also... examples of small businesses people may not think of when they think of small business

Private Doctor
Independant Lawyer
Dentist
Construction Companies
Apartment Owners
Used Car dealers
Independant Grocery Stores (there are some large ones out there as big as the retail stores).
A/C & Heat repair (big business where I live)
Bars (very big business and the overhead is not as much as you'd like to think)
Resturants
Landscaping services (also a lot of money in this industry)

etc etc

I get the sense when people think of small business they think of the laundry mat; or your local corner store, or dollar store.

Small business generates a LOT of money; and helps employ a great deal of people.