[eucryphia]

How do you ‘harm the world’ by producing something of value that someone else will voluntarily pay for with their own money?

[Psyladine]

https://en.wikipedia.org/wiki/List_of_Superfund_sites

Externalities and cost savings.

[anovikov]

Indeed, but in most cases those people only paid because they fell into delusion/were tricked by someone/had an intention to harm others using the product. Or sometimes just by mistake.