Well, first off, I will remind you that the great slave nations were almost all Capitalist.
Secondly, Capitalism is not based on consensual exchange, and no free market means no government interference, the fact that we have laws against slavery inherently mean the market is LESS free, Capitalism is an economic system where power is mainly held by the capital holders, instead of the workers.
Ironically, Capitalism can function perfectly fine with planed, and authoritarian economies… like it did during Nazi Germany.
then again, I don’t expect someone spouting the old Glenbech shit to actually know anything about economic and political ideologies…