I don't know anyone anymore who has a tape deck, but I've come across ads selling new blank cassette tapes.
(Purposeful misquote)They wouldn't fix cassettes low sound quality.
Vinyl is pretty terrible too, at least compared to modern digital formats or reel to reel. People like vinyl because it's a big spinny thing that they can hold and look at.While there is a case to be made for vinyl on a good analog system