This was a fun deep dive.

In a past life, I worked with some blind students who used electronic Braille readers, and the tech that's already out there is fascinating (it's just not cheap). What's also interesting (and something that truly surprised me) is how few blind folks know Braille; I'd taken it as a given that if you go blind (and certainly at a young age), you learn Braille. But the estimate is that 10% of blind people can read Braille (and that's general Braille; there are things like Nemeth Braille aimed at scientific use that are even less used). So it makes some things that would normally drive costs down -- ubiquity and mass production -- not as available as one might think.

OTOH, find any blind person who's using Voiceover or similar tech, and watch as they listen to something read at 10X speed with no issues. Pretty much everyone masters the skill. I think the use of good text-to-speech has led to an entire generation that simply doesn't look at Braille as being as valuable as it once was.

(Aside: There's also debate about whether the 10% number is still accurate, but no sense of whether it's too high or too low, though I'd guess the former.)