However, the implication that an outsider might draw from your comment is that, say, the band that wrote the original post might hope to make those kinds of royalties since they (presumably?) wrote the melody and lyrics to the original song.
If they sign to a major label and have a hit that continues to rake in those royalties, that is wonderful. If one of their songs is used in a big Hollywood film, and for covers, etc, great.
But that's a lot of ifs. Even non musicians know the truth now, they've all read "Courtney Love Does the Math" on Salon.
The reality of most musicians, even those signed to major labels, is far from a rosy economic picture. It seems to me that to imply otherwise is disingenuous.
Didn't mean for that last part to sound like an attack, it's just that reading your (very well written) comment does not solve the problem of the musicians who wrote the original post.