[jessaustin]

The antebellum economy was largely agricultural. A family working ten acres of corn with hand- and mule-power did not in any sense benefit from the fact that other landowners had slaves. It would be more accurate to say that they were in competition with enslaved labor. One might as well ask American factory workers how much they've benefited from cheap overseas factory labor.

Upthread you claimed that such small farmers also used slaves. That may have happened occasionally, but the basic requirements of agriculture in a temperate climate (there is a limited time period during which particular tasks can possibly take place) would have made it rare.