Not really. Slavery didn't have anything to do with capitalism. It was based on the old aristocratic privilege world view. Some people were entitled to service and others forced to do the servicing.
That didn't stop the slaveholders from appealing to capitalist ideas when it suited. They complained that Emancipation was "being deprived of property without due process". Sorta like the racists inventing "social darwinism".
Tom
Well, yes and no. America's Founders were very much against aristocratic privilege or any kind of "divine right." Many slave owners were not Blue Bloods at all; they were just ordinary peasant stock who happened to be in the right place at the right time. That's a part of Americana, how ordinary peasants came over here and carved a nation of prosperity and wealth out of a wilderness. That's very much the kind of rags-to-riches story used to boost capitalism.