Look to the Down Under model
A similar situation (requiring ISPs to block on Court Order) has been running in Australia. This was primarily a result of the movie studios working with the owners of the Dallas Buyers Club copyright
There the Courts have come down partly in favour of the ISPs and ordered that Copyright holders have to pay ISPs $50 per domain blocked. http://www.abc.net.au/news/2016-12-15/federal-court-orders-pirate-bay-blocked-in-australia/8116912
This has led to the inevitable "unintended consequence" that the Copyright holders have to keep going back to the Court to seek further domain blocks which puts the identity of the naughty domains in the public arena giving wannabe pirates a new list of domains to trawl for their films :-)
There is a cost of compliance (even if small) on the ISPs and, as the issue is a Civil matter between companies (i.e. not a criminal prosecution), I think it right that the ISPs should be recompensed for their efforts. Where crime is involved then it's equally right that the ISPs act without payment.
There is a thread, on the very respected Whirlpool Forums site, covering the debate. (tip select "Return to Standard View" - top right hand to make navigation easier.)
https://forums.whirlpool.net.au/archive/2591386
Biting the hand that feeds IT
