Bassist Kim Gordon told The Guardian that Radiohead did not really release the records themselves but used the industry to put the record in the public domain.
Gordon said: "They did a marketing ploy by themselves and then got someone else to put it out. It seemed really community-oriented, but it wasn't catered towards their musician brothers and sisters, who don't sell as many records as them.
"It makes everyone else look bad for not offering their music for whatever. It was a good marketing ploy and I wish I'd thought of it! But we're not in that position either."
She added that if Sonic Youth tried to self-release their own records it would take them away from the music-making process.
Guitarist Lee Ranaldo said: "Probably the most fun thing we do in our lives is getting up on stage. I always use the Rolling Stones as the whipping boy for this, but they still play old songs as 90% of their set and we would die if that were the case."