Seriously. People get all bent over not making X millions of dollars every year. Something better comes along that competes, hey we don't have to adapt, lets just sue everyrone.
This reminds me of something similar...I've been playing bass guitar for a number of years, and I enjoy learning how to play songs I like listening too (as many guitarists do), as well as improvisational stuff. For a while, I used to get a lot of tab music from the Bass Tab Archive, basically a database of user-submitted tab. I went there one day to find it shut down, with a message saying something to the effect of, we can't host tab music any more because we are being sued by people who sell licensed tabs, and they are losing too much money because people can get them free here instead of buying them. Whats next, you're no longer allowed to sing along with your favorite radio stations because you haven't paid for the rights to the lyrics?