It would kill your business eventually so it may me a naive question but : do you need volunteer work to help identify and warn those insecure networks ?
I had my own "let's see what we can do" youth, and sure thing it is very insightful. If we were talking only about business damage, I would say : "well, they desserve it". But we're not.
What do you think would happen if tomorrow, news headline was : "Massive oil truck crash kills 10, caused by hacker tempering with traffic lights." ? Repressive laws against any kind of computer toying would become even harder, and our highschoolers may go to jail for simply trying to have fun.