I had only heard that there wasn’t much merit to multiple layers of compression as there is only so much compression that can be done.

One similar solution to OP here is tarballs.

Don’t forget flac, which was playable on many devices.

So does Chuck e Cheese, or did recently?

https://www.buzzfeednews.com/article/katienotopoulos/chuck-e-cheese-animatronic-floppy-disks

That was true until the early 00s when people were getting destroyed in court for mp3 sharing.

Pretty sure they meant theft of the theoretical car that might have been sold to you if you could afford it.

/s