Exactly what lost revenue?
Every single figure offered by Big Media (MPAA, RIAA, big member labels) is based on obviously, patently BS statistics someone pulled out of an anus rather than any kind of meaningful analysis. By contrast, actual statistical studies conducted with methodology and data open to review (as opposed to baldly stated lies about 700+ billion dollars lost with no evidence to support them) tend to show a strong correlation between spikes in illegal downloads and spikes in revenue through legal channels. What's the most-downloaded movie in history? Avatar. What's the highest grossing movie in history? Avatar. Where's the harm to the revenue stream?
Show me some evidence -- any credible evidence at all -- that there's any systematic loss of revenue, and that it isn't more than offset by the free advertising benefits of illegal downloads. That, or stop making unsupported claims of lost revenues. Please.