To be fair, I'd love to see a case like this brought to court. I'm not sure there's great precedent here. I think a case could be made that Slack was not harmed through this work.
I'd like to hear a lawyer (HN has several) corroborate this "Slack must articulate harm" claim, because there is a whole branch of civil law that exists to enforce contracts in the absence of torts; as I understand it, it's called "contract law".
This is true, and not all contracts are valid. It's why I'd love to see a good case brought. I feel like every time this happens the little guy just folds instead of doubling down.
But agree, would love to see some lawyers weigh in.