I download vast quantities of mp3s and i can't disagree anymore. I love discovering new styles and genres of music, just as much as I like discovering new artists.
The only problem I have, and i think this is the whole crux of the matter here, the "new" i'm referring to are decades old. Bands i've never heard before, from before I was born are exciting to listen to, and as a regular at several music festivals, I have to say I really do appreciate live performances when the bands are good.
I think they'll find this study is rotten at the core and most people are apathetic to modern music. That is, the low standards of popular music these days means a total lack of interesting and original bands and songs.
I owe finding/getting into some of my favourite bands solely on the shoulders of having access to p2p and vast wealth of songs. Infact i'd go so far as if it weren't for napster I'd be totally apathetic to music as a whole, or rather I wouldn't buy any because it didn't interest me as much as it does now.
Very dodgy research, or rather, I doubt they considered context, and to what degree there were people that only downloaded modern music, and contrasting that with those that download older music. I really do think it will be those that only download modern music and chart/popular music that will be apathetic to the crap that the industry is churning out.