I hate the stance people take with this argument, because it comes off as unnecessarily antagonistic. Preventing anyone from sharing the technology or indeed from using it would be very hard, this is true, but heavy handed regulation could still kill public development. Rather than trying to argue that it's too late to stop the technology, it's much more productive to try and convince people on the positives of the technology, that there's great things that can come from it. You convince no one with an argument that there's nothing they can do about it, because they can certainly try, and they certainly can make the experience worse. No one should want things to be stuck where they are now, with people just trading dated copies of the tech in shadier parts of the internet, and possible consequences for sharing the art.