sorry, by "release a screen reader" I meant "release a screen reader that was actually usable, and that people wanted to use". Narrator wasn't usable for almost anything until Windows 8, and that's when it started supporting OS configuration. Before then, it was mostly used for recovery, when your screen reader crashed and you needed to do one or two really simple things.
I don’t think that’s correct. Microsoft Narrator is from 2000 (https://en.wikipedia.org/wiki/Microsoft_Narrator), voice-over from 2005 (https://en.wikipedia.org/wiki/Mac_OS_X_Tiger)
The Mac had a screen reader in 1989, but that was third party software (https://en.wikipedia.org/wiki/OutSpoken)
IIRC, Narrator was designed for use during OS installation. If so, “the first to make installing the OS accessible” isn’t correct, either.