Please point your browser to https://www.fsf.org/ and view the source. Search the page for "" and see if the FSF really believes what you claim.
Basically, a musician can make a living, they just have to work their ass off to do it and won't always be playing the music they love, just like any other job.
"Here's something to think about: How come you never see a headline like `Psychic Wins Lottery.'" -- Comedian Jay Leno