[Someone]

"It is of extremely limited use at the moment as you require a text to be already available to you or pay high fees for conversion"

I'm not sure this adds much; for text, there already are mechanical printers that. Yes, they are bulky and noisy, but they do the job. Advenateg of this could be that one can also emboss graphics and, possibly, that the printer and the paper can be a lot cheaper. If the latter is true, we might see printing get more use.

However, for the hard-core reader, I guess a computer, a screen reader (https://en.wikipedia.org/wiki/Screen_reader), and a refreshable braille display (https://en.wikipedia.org/wiki/Refreshable_braille_display) will remain the optimal solution for most use cases. They form a very powerful combination for the blind, provided they persevere in mastering it.