Personally I can't understand why people didn't think this would end up happening. After all, piracy is being done via the internet on a massive scale and that's easy to solve with the unticking of a box on a screen of the account that's been used to download and share the media.
For those who bleat on about it being unfair, you can't cry about a law being unfair when you're wantonly breaking the law in the first place which is the reason this has been brought in.
The account holder will get two warnings before a strike which is more than enough. Now considering that many of these account holders are the parents of the person who has been breaking the law, maybe it'll force them to exercise some parental responsibility for what their kids are doing online instead of using the computer as a free babysitter.