However, from the artist point of view, he will see more money from his new music than the next musician that simply releases a standard album.
I find that rather hard to believe, but it's certainly possible. Depends on who the "next musician" is I guess.
Trent Reznor released his own album on pirate bay himself, told everybody it's fine to copy for free, put it all under a free license, and still got $1.6million profit from it (no record label involved, all that money went straight to him).
(Note: I'm not really a NIN fan, only like maybe 2 songs. I used to like Beck, until I realised any money he gets is going to be supporting scientology. I haven't listened to any of his music since then. So... umm, I guess I'm biased against Beck, but I'm not mentioning Trent in here twice because I'm a fan. Even if Electric Six (my current favourite group) did this sheet music thing, I still wouldn't be in favour of it)