Yet Netflix has a anti -piracy unit that does the same thing Sky is doing and yet not a peep.
Netflix isn't lobbying governments to change laws for this(afaik), just internally playing cat and mouse to meet their obligations to serve the content only to the markets they have agreed to.
I would point to the DVD market here being protected by law, blocking imports from grey markets(cheaper) for commercial resale to protect local distributors who hold the NZ rights. They have decent protection because it's a physical item being sold that can be seized at our border, digital is a completely different beast which as many have pointed out can be defeated by using a different DNS server or going further and using a VPN.
I can see such a law being passed eventually, especially if a large media company is lobbying for it. Look at how quick we changed the ERA to keep The Hobbit here, gutted protections for an entire industry. So say if 21st Century Fox say they won't fund Avatar's rumoured billion dollar budget for 4 more films being made here unless such a law is put in place it would happen imo.