This is real piracy. Gnutella is not: you are not making a profit, hence you are not a pirate. It may not be the intent of the Fair Use doctrine that you share so openly, and it may be unfair to authors that you do so, but to compare P2P sharing to this kind of piracy is what got everyone annoyed at the RIAA.
But the result is often the same (author/record label isn't credited with a sale). So if you don't want to call it piracy, fine. But you can't pretend that it's impossible for P2P "sharing" to have an adverse economic effect on authors in much the same way that counterfeiting does.
Agreed, but the underlying problem is still the same. The music industry is charging way too much for its product.