what i find kind of funny is how the internet was originally developed to share information and files....
though alot of P2P is "illegal" swapping of files, it is still at the core of the internet's purpose from what i see in a general sence.
what i would argue is that the P2P systems have helped the distribution of data, through various ways, and routes. the ability to search up an item, find it, download it, has opened a new way to think about sharing resources.
the fact that now you can DL from various sources and piece it together on your end was a major leap in the spread of information i think.
use that same technology for research, finding obscure articles, so on, without those people developing the basics of software like that, where would we be?
i dont think you can deny the good impact they have had on the way information in general is found and transfered. unfortunatly in my opinion this legal decision only helps to hinder the development of the sharing of information.