Music wasn’t always so easily accessible as it is now. I think really only the radio was something everyone would have access to. If you had vinyl, CDs etc then you were at least somewhat musically inclined and some folks would just not be and never really get into it or invest in getting their own music. Not that they would literally never hear or listen to music but it wasn’t one of their hobbies. Compared to today where we all have access to music on demand and it would be weird if you don’t have at least some preferences or something.