Copyright infringement laws are not working

According to Rebecca Giblin of Monash University:

It has been more than three years since the first countries began implementing ‘graduated responses’, requiring ISPs to take a range of measures to police their users’ copyright infringements. Graduated responses now exist in a range of forms in seven jurisdictions. Right-holders describe them as ‘successful’ and ‘effective’ and are agitating for their further international roll-out. But what is the evidence in support of these claims?
…
[There] is little to no evidence that graduated responses are either ‘successful’ or ‘effective’. The analysis casts into doubt the case for their future international roll-out and suggests that existing schemes should be reconsidered.