Aha! But that's precisely the catch! It doesn't matter if it's harmful for some people, because the constitutional foundation for copyright says that its point is to "promote progress of the useful arts". Intellectual "property" is not property. The terms is meant to confuse the law.
The question we should be asking - what system of copyright best promotes progress? It sure as hell isn't the one we have now, but it also isn't an abolition of copyright altogether.