I am working on a hobby project to help me manage my Toastmasters clubs and Id love to get it into more hands because its genuinely helpful but more hands means more maintenance and opération costs. I asked Claude if I could charge for it and it basically said that as long as its a hobby project Im safe but once I start charging, then the Toastmasters organization could sue me or issue a cease and desist for using their IP to make money without permission, which makes sense. It did advise me to talk to a lawyer which I haven't done, but assuming it's right, then financial incentives causing other parties "harm" (for some definition of the word) are illegal.

In other words, I think the law wants what you and OP said to be true, but seems like it doesn't apply once you get big enough. Anecdotally, Amazon and Walmart and other big retailers seem to not be held responsible when they sell goods that dont work as advertised or even actively harm people.