This is a needlessly escalatory and inflammatory comment, and the kind of comment that's out of line on HN. It's fine to disagree and counter someone else's comment, but not by breaking the guidelines like this.
This seems like a bad faith argument. But if you're being serious, I can buy non-nike shoes in the same way you can buy non-Apple phones. If anything, the people complaining about Apple would be upset by the lawsuit because they want to buy an iPhone despite other options being available. And in that case, the alternatives are cheaper not more expensive in the case of ethically made shoes.