Code said:
A slavery-based economy doesn't allow for the distribution of wealth. Meaning only a select few garner wealth, while the general population gets poorer and poorer.
But that is irrelevant because it was never the intention of a slave based system - distributing welath''. Slaves are supposed to be poor.
Slavery is economically a loser because there is no incentive to streamline or innovate....just throw more labor at the problem.