Sounds kind of familiar (Score 1)

I love this. This is so common in other industries.

One major controversial one that comes to mind is gun makers. The government wants to hold the gun makers responsible for what idiots do with their guns. Once the gun has been sold, there is nothing the gun maker can do about it.

Same here.

The p2p software makers are simply trying to put food on the table. Once they sell the software to an individual, they cannot control what the individual uses it for.

If you want an odd thought, think for a moment that the p2p companies would be allowed to exist, but get regulated like the gun makers - because their software is "dangerous to the general public" or whatever. Funny how once we let the gov't into an area of business (i.e. gun control), they want to control all of it _for our good_ (tm).