I really dislike this idea that slavery was just a cultural aberration and not economic. For one thing, that lightens the moral stain of slavery adjacent activity, most notably colonialism and the exploitation of the colonies. This never went away. Economic colonialism exists to this day. We just call it “outsourcing”, “offshoring” and “subcontracting”.
Consider as just one example the lawsuit over child slavery against Nestle, etc [1]. The Supreme Court ultimately ruled that Nestle can't be held responsible for the child slavery even though they have full knowledge of it happening. Go figure. In fact, that's what they pay for.
The whole shipbreaking industry in Bangladesh is incredibly dangerous for those involved and couldn't possibly be done in any developed nation.
[1]: https://www.theguardian.com/global-development/2021/feb/12/m...