I think this is a commonly-heard thing, isn't it?
Aren't we really casually confusing "making a profit off causing suffering" and "making a profit off reducing suffering"? I want our richest people to be those who reduce suffering the most. Is there some other thing we want people making money off of? Shouldn't reducing suffering be the maximally moral metric we use to allocate resources?
This might be the silliest thing people get sanctimonious about. And that's a pretty competitive category these days.