caused “substantial harm to television program copyright owners,_
Maybe? People willing to copy and distribute this content will always be around and you will never catch them all. People willing to pay a discount or seek not and find said content will always be around. And there will be those who will watch a show or a movie because it is freely available, who would never pay a dime for it.
They will never end piracy and I'd argue it might actually be bad for business if they did.