You're challenging a statement of the form, "A causes B. I don't like B, so we shouldn't do A." You are challenging it by asking, "How does not doing A prevent B?" Converting that to logic, you are replacing "A implies B" with "not-A implies not-B". But those statements are far from equivalent!

To answer the real question, it is good to not guarantee a bad result, even though doing so doesn't guarantee a good result. So no, choosing not to regulate does not guarantee that we stop this particular problem. It just means that we won't CAUSE it.