Re: Pass it on
So a universal cost increase will just be passed on to all the ISPs' users. They will all raise their prices by the cost of implementing this.
Or conversely: the ISPs will implement the cheapest solution which can they can come up with, and that is an automated system that blocks *any* site requested by *anyone*, without any due process to investigate whether the request is legitimate or not. Of course, they then risk getting sued by people who are having their content blocked wrongly; but unlike big media companies, they probably won't have the resources to fight.
In the end, an auto-takedown approach results in the whole Internet being blocked, apart from a whitelist consisting primarily of Google / Facebook / Twitter (whose content can't be selectively blocked at the domain or IP level anyway)