The music industry has for a few months been attacking ISPs from all angles. Check out this article TorrentFreak (which cites this article at Ireland.com) about legal proceedings that have just began in Ireland against an Irish ISP.

Here's a blurb from the Ireland.com article:

Latest figures available, for 2006, indicate that 20 billion music files were illegally downloaded worldwide that year. The music industry estimates that for every single legal downloaded, there are 20 illegal ones.

Due to illegal downloading and other factors, the Irish music industry is experiencing "a dramatic and accelerating decline" in income, with the Irish market suffering a decline in total sales from €146 million in 2001 to €102 million last year, said Willie Kavanagh, managing director of EMI records (Ireland) and chairman of the Irish Recorded Music Association (IRMA).

Mr Kavanagh told the High Court he would attribute a substantial portion of that decline to illegal peer-to-peer downloading services and the increasing availability of broadband internet access.

I'd like Mr. Kavanagh to define "substantial portion" or at least offer a range. I'd ballpark it at 10-30%. Recall the CapGemini study that put piracy's impact on the drop in UK recorded music from 2004 to 2007 at 18%. Gaming and format substitution are silent but more dangerous predators.