It doesn't matter about whether they host the files or not, it's the software that is the key: see
here for Q+As regarding the recent US Supreme Court decision. I know you're a small company, and it's pretty rubbish that idiots out there crack software and then put it on file-sharing networks. Nevertheless, I think it's worth attempting to bring some pressure to bear.
PM or email me, Dom, if you plan to give it a go and I'll talk it over with you.:)