The Supreme Court is hearing arguments on the MGM v Grokster case this week. While as an individual P2P product, Grokster isn't important, this case could potentially reverse the Universal v Sony Betamax case that has protected innovators for decades. Without Betamax, makers of VCRs, CD/DVD burners, photocopiers, and network hardware and software would all be susceptible to lawsuits on behalf of the entertainment industry for aiding copyright infringement.
It looks like the SCOTUS has some understanding of the implications of reversing Betamax, and MGM is doing a poor job arguing against the drastic damage to America's ability to innovate if Betamax were overturned. From http://blogs.law.harvard.edu/tka/2005/03/29#a53
You can find up to date information at the SCOTUS blog
http://www.scotusblog.com/movabletype/archives/2005/03/court_conflicte.html
It looks like the SCOTUS has some understanding of the implications of reversing Betamax, and MGM is doing a poor job arguing against the drastic damage to America's ability to innovate if Betamax were overturned. From http://blogs.law.harvard.edu/tka/2005/03/29#a53
At least some of the Justices, Scalia in particular, seemed troubled by how an inventor would know, at the time of inventing, how its invention might be marketed in the future. How, some of the Justices asked MGM, could the inventors of the iPod (or the VCR, or the photocopier, or even the printing press) know whether they could go ahead with developing their invention? It surely would not be difficult for them to imagine that somebody might hit upon the idea of marketing their device as a tool for infringement.
MGM's answer to this was pretty unsatisfying. They said that at the time the iPod was invented, it was clear that there were many perfectly lawful uses for it, such as ripping one's own CD and storing it in the iPod. This was a very interesting point for them to make, not least because I would wager that there are a substantial number of people on MGM's side of the case who don't think that example is one bit legal.
You can find up to date information at the SCOTUS blog
http://www.scotusblog.com/movabletype/archives/2005/03/court_conflicte.html