I remember those stickers.
Hold on Sony and Co. If home taping is illegal why did you have recording functionality?
So every family's members could all sing and share and all the new competition would drive the cost of the latest ZZ Metallica album down.
They just couldn't figure out a way to encode audio on cassette to prevent copying, though every time one copied a tape's content onto another, there was a generational drop in quality. One can mask it to an extent with an equalizer, but it's going to go down a tad. That's why I don't believe "recording from a vinyl to type 4 shiny metal cassette sounds more artificially warm or whatever, there's distortion that's more appealing in the end...)
Lossless or near-lossless AAC is going to sound the future, anyway. Cassettes and vinyl use more irreplaceable resources, are not portable, and are sold on a myth to begin with, never mind the RPM and disc diameter issues, and each playback with the needle (slowly degrades) the vinyl over time and I'm not talking about scratching across the surface. Pops and other artifacting noises from vinyl are not better. All the talk of sound quality is hilarious since the master tapes holding all the old songs from the 1960s and such were made on 30ips 1/2" or 1" wide tape - holding
far more quality than any home portable 1/8" grade type bloody 1, 2, 3, or 4 ever will.

And with lesser chance of dropouts and other forms of entropy-driven degradation that aren't easily irreparable (or at all)... To say nothing about pitch and other tone problems if the motor isn't spinning at a consistent speed, restoration of TOS' sountrack masters must have been a chore... CDs may cut bandwidth in ranges above and below the human frequency range, but that's nothing by comparison to any analogue media.