No. Slavery fueled capitalism.
Maximizing production, remember? Minimizing labor costs, remember? Increasing profit, remember?
Slavery put Britain on the map, greased its Industrial Revolution.
It turned London from a swampy backwater into the financial capital of the world thanks to the banking and insurance companies that sprouted up there and grew into giant money making machines. Literally. The slave trade is directly responsible for all the banks and insurance companies located in London to this day.
In the US, the South is still relatively poor without it. During slavery, it provided the cotton, tobacco, and other crops that the manufacturing North turned into products to be traded overseas. Why do you think that even after the North got rid of its own slavery it didn't protest about it continuing in the South? The North was economically dependent on it also, albeit indirectly.