Isn't it normal and typical for musical acts to make more money from concert tours and merchandise sales than the music itself?
I've also never seen anyone slam dance carrying a Ramones album, but I have seen them slam dance wearing a Ramones t-shirt that got tore up.
Gabba gabba hey!
Which is a reasonable implication given that punk grew up around the DIY culture. A commercially produced recording doesn't exactly align with the interests of that type of community, even where that community enjoys the music itself.